Project import generated by Copybara.20180600

GitOrigin-RevId: d89dba27e35462d7457121b978fd79214205e686
Change-Id: I0eae80578a93a580820bc90d42e6b42faf7fde0a

32 files changed, 75 insertions, 3 deletions

diff --git a/absl/base/internal/atomic_hook.h b/absl/base/internal/atomic_hook.h
index b458511b..7d0ee2fa 100644
--- a/absl/base/internal/atomic_hook.h
+++ b/absl/base/internal/atomic_hook.h
@@ -28,6 +28,7 @@
 #endif
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 template <typename T>
@@ -160,6 +161,7 @@ class AtomicHook<ReturnType (*)(Args...)> {
 #undef ABSL_HAVE_WORKING_ATOMIC_POINTER
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
diff --git a/absl/base/internal/cycleclock.cc b/absl/base/internal/cycleclock.cc
index a742df01..a4f1fc21 100644
--- a/absl/base/internal/cycleclock.cc
+++ b/absl/base/internal/cycleclock.cc
@@ -27,6 +27,7 @@
 #include "absl/base/internal/unscaledcycleclock.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 #if ABSL_USE_UNSCALED_CYCLECLOCK
@@ -78,4 +79,5 @@ double CycleClock::Frequency() {
 #endif
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/cycleclock.h b/absl/base/internal/cycleclock.h
index 60e97158..5fd8b348 100644
--- a/absl/base/internal/cycleclock.h
+++ b/absl/base/internal/cycleclock.h
@@ -46,6 +46,7 @@
 #include <cstdint>
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // -----------------------------------------------------------------------------
@@ -72,6 +73,7 @@ class CycleClock {
 };
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_CYCLECLOCK_H_
diff --git a/absl/base/internal/direct_mmap.h b/absl/base/internal/direct_mmap.h
index 2fe345fc..e98c9960 100644
--- a/absl/base/internal/direct_mmap.h
+++ b/absl/base/internal/direct_mmap.h
@@ -62,6 +62,7 @@ extern "C" void* __mmap2(void*, size_t, int, int, int, size_t);
 #endif  // __BIONIC__
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // Platform specific logic extracted from
@@ -122,6 +123,7 @@ inline int DirectMunmap(void* start, size_t length) {
 }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #else  // !__linux__
@@ -130,6 +132,7 @@ inline int DirectMunmap(void* start, size_t length) {
 // actual mmap()/munmap() methods.
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
@@ -142,6 +145,7 @@ inline int DirectMunmap(void* start, size_t length) {
 }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // __linux__
diff --git a/absl/base/internal/endian.h b/absl/base/internal/endian.h
index edc10f10..00447110 100644
--- a/absl/base/internal/endian.h
+++ b/absl/base/internal/endian.h
@@ -34,6 +34,7 @@
 #include "absl/base/port.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 
 // Use compiler byte-swapping intrinsics if they are available.  32-bit
 // and 64-bit versions are available in Clang and GCC as of GCC 4.3.0.
@@ -264,6 +265,7 @@ inline void Store64(void *p, uint64_t v) {
 
 }  // namespace big_endian
 
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_ENDIAN_H_
diff --git a/absl/base/internal/endian_test.cc b/absl/base/internal/endian_test.cc
index f3ff4b39..66ccd45a 100644
--- a/absl/base/internal/endian_test.cc
+++ b/absl/base/internal/endian_test.cc
@@ -24,6 +24,7 @@
 #include "absl/base/config.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace {
 
 const uint64_t kInitialNumber{0x0123456789abcdef};
@@ -276,4 +277,5 @@ TEST(EndianessTest, big_endian) {
 }
 
 }  // namespace
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/hide_ptr.h b/absl/base/internal/hide_ptr.h
index 45cf4389..a2694508 100644
--- a/absl/base/internal/hide_ptr.h
+++ b/absl/base/internal/hide_ptr.h
@@ -18,6 +18,7 @@
 #include <cstdint>
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // Arbitrary value with high bits set. Xor'ing with it is unlikely
@@ -42,6 +43,7 @@ inline T* UnhidePtr(uintptr_t hidden) {
 }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_HIDE_PTR_H_
diff --git a/absl/base/internal/identity.h b/absl/base/internal/identity.h
index a6734b4d..2eaab453 100644
--- a/absl/base/internal/identity.h
+++ b/absl/base/internal/identity.h
@@ -17,6 +17,7 @@
 #define ABSL_BASE_INTERNAL_IDENTITY_H_
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace internal {
 
 template <typename T>
@@ -27,7 +28,8 @@ struct identity {
 template <typename T>
 using identity_t = typename identity<T>::type;
 
-}  //  namespace internal
-}  //  namespace absl
+}  // namespace internal
+}  // inline namespace lts_2018_06_20
+}  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_IDENTITY_H_
diff --git a/absl/base/internal/inline_variable_testing.h b/absl/base/internal/inline_variable_testing.h
index a0dd2bb2..49fa4ade 100644
--- a/absl/base/internal/inline_variable_testing.h
+++ b/absl/base/internal/inline_variable_testing.h
@@ -18,6 +18,7 @@
 #include "absl/base/internal/inline_variable.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace inline_variable_testing_internal {
 
 struct Foo {
@@ -39,6 +40,7 @@ const int& get_int_a();
 const int& get_int_b();
 
 }  // namespace inline_variable_testing_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INLINE_VARIABLE_TESTING_H_
diff --git a/absl/base/internal/invoke.h b/absl/base/internal/invoke.h
index 8c3f4f60..bc05a0a3 100644
--- a/absl/base/internal/invoke.h
+++ b/absl/base/internal/invoke.h
@@ -43,6 +43,7 @@
 // top of this file for the API documentation.
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // The five classes below each implement one of the clauses from the definition
@@ -183,6 +184,7 @@ InvokeT<F, Args...> Invoke(F&& f, Args&&... args) {
                                            std::forward<Args>(args)...);
 }
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_INVOKE_H_
diff --git a/absl/base/internal/low_level_alloc.cc b/absl/base/internal/low_level_alloc.cc
index 0a6f3070..ca6239ad 100644
--- a/absl/base/internal/low_level_alloc.cc
+++ b/absl/base/internal/low_level_alloc.cc
@@ -63,6 +63,7 @@
 #endif  // __APPLE__
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // A first-fit allocator with amortized logarithmic free() time.
@@ -599,6 +600,7 @@ void *LowLevelAlloc::AllocWithArena(size_t request, Arena *arena) {
 }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/absl/base/internal/low_level_alloc.h b/absl/base/internal/low_level_alloc.h
index 3c15605b..3f289571 100644
--- a/absl/base/internal/low_level_alloc.h
+++ b/absl/base/internal/low_level_alloc.h
@@ -51,6 +51,7 @@
 #include "absl/base/port.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 class LowLevelAlloc {
@@ -115,5 +116,6 @@ class LowLevelAlloc {
 };
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 #endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
diff --git a/absl/base/internal/low_level_alloc_test.cc b/absl/base/internal/low_level_alloc_test.cc
index cf2b3632..15ffe298 100644
--- a/absl/base/internal/low_level_alloc_test.cc
+++ b/absl/base/internal/low_level_alloc_test.cc
@@ -22,6 +22,7 @@
 #include <utility>
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 namespace {
 
@@ -148,6 +149,7 @@ static struct BeforeMain {
 
 }  // namespace
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 int main(int argc, char *argv[]) {
diff --git a/absl/base/internal/low_level_scheduling.h b/absl/base/internal/low_level_scheduling.h
index e716f2b4..2ae464b4 100644
--- a/absl/base/internal/low_level_scheduling.h
+++ b/absl/base/internal/low_level_scheduling.h
@@ -28,6 +28,7 @@ extern "C" bool __google_disable_rescheduling(void);
 extern "C" void __google_enable_rescheduling(bool disable_result);
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 class SchedulingHelper;  // To allow use of SchedulingGuard.
@@ -100,5 +101,6 @@ inline void SchedulingGuard::EnableRescheduling(bool /* disable_result */) {
 
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 #endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
diff --git a/absl/base/internal/raw_logging.cc b/absl/base/internal/raw_logging.cc
index 1ce13888..cd1bbc09 100644
--- a/absl/base/internal/raw_logging.cc
+++ b/absl/base/internal/raw_logging.cc
@@ -181,6 +181,7 @@ void RawLogVA(absl::LogSeverity severity, const char* file, int line,
 }  // namespace
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace raw_logging_internal {
 void SafeWriteToStderr(const char *s, size_t len) {
 #if defined(ABSL_HAVE_SYSCALL_WRITE)
@@ -215,4 +216,5 @@ bool RawLoggingFullySupported() {
 }
 
 }  // namespace raw_logging_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/raw_logging.h b/absl/base/internal/raw_logging.h
index a2b7207a..04ff0607 100644
--- a/absl/base/internal/raw_logging.h
+++ b/absl/base/internal/raw_logging.h
@@ -65,6 +65,7 @@
   ::absl::NormalizeLogSeverity(severity)
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace raw_logging_internal {
 
 // Helper function to implement ABSL_RAW_LOG
@@ -132,6 +133,7 @@ using AbortHook = void (*)(const char* file, int line, const char* buf_start,
                            const char* prefix_end, const char* buf_end);
 
 }  // namespace raw_logging_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_RAW_LOGGING_H_
diff --git a/absl/base/internal/scheduling_mode.h b/absl/base/internal/scheduling_mode.h
index 1b6497ad..dd7df6bb 100644
--- a/absl/base/internal/scheduling_mode.h
+++ b/absl/base/internal/scheduling_mode.h
@@ -19,6 +19,7 @@
 #define ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // Used to describe how a thread may be scheduled.  Typically associated with
@@ -49,6 +50,7 @@ enum SchedulingMode {
 };
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
diff --git a/absl/base/internal/spinlock.cc b/absl/base/internal/spinlock.cc
index 1b97efbc..9d90b3cb 100644
--- a/absl/base/internal/spinlock.cc
+++ b/absl/base/internal/spinlock.cc
@@ -54,6 +54,7 @@
 //          holder to acquire the lock.  There may be outstanding waiter(s).
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 ABSL_CONST_INIT static base_internal::AtomicHook<void (*)(const void *lock,
@@ -225,4 +226,5 @@ uint64_t SpinLock::DecodeWaitCycles(uint32_t lock_value) {
 }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/spinlock.h b/absl/base/internal/spinlock.h
index 212abc66..7b59fe26 100644
--- a/absl/base/internal/spinlock.h
+++ b/absl/base/internal/spinlock.h
@@ -45,6 +45,7 @@
 #include "absl/base/thread_annotations.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 class LOCKABLE SpinLock {
@@ -234,6 +235,7 @@ inline uint32_t SpinLock::TryLockInternal(uint32_t lock_value,
 }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_SPINLOCK_H_
diff --git a/absl/base/internal/spinlock_wait.cc b/absl/base/internal/spinlock_wait.cc
index 9f6e9911..6709d01e 100644
--- a/absl/base/internal/spinlock_wait.cc
+++ b/absl/base/internal/spinlock_wait.cc
@@ -30,6 +30,7 @@
 #endif
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // See spinlock_wait.h for spec.
@@ -76,4 +77,5 @@ int SpinLockSuggestedDelayNS(int loop) {
 }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/spinlock_wait.h b/absl/base/internal/spinlock_wait.h
index 5f658211..31aaa8c6 100644
--- a/absl/base/internal/spinlock_wait.h
+++ b/absl/base/internal/spinlock_wait.h
@@ -24,6 +24,7 @@
 #include "absl/base/internal/scheduling_mode.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // SpinLockWait() waits until it can perform one of several transitions from
@@ -62,6 +63,7 @@ void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
 int SpinLockSuggestedDelayNS(int loop);
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 // In some build configurations we pass --detect-odr-violations to the
@@ -84,7 +86,7 @@ inline void absl::base_internal::SpinLockWake(std::atomic<uint32_t> *w,
 
 inline void absl::base_internal::SpinLockDelay(
     std::atomic<uint32_t> *w, uint32_t value, int loop,
-    base_internal::SchedulingMode scheduling_mode) {
+    absl::base_internal::SchedulingMode scheduling_mode) {
   AbslInternalSpinLockDelay(w, value, loop, scheduling_mode);
 }
 
diff --git a/absl/base/internal/sysinfo.cc b/absl/base/internal/sysinfo.cc
index db41bacc..7db2e001 100644
--- a/absl/base/internal/sysinfo.cc
+++ b/absl/base/internal/sysinfo.cc
@@ -56,6 +56,7 @@
 #include "absl/base/internal/unscaledcycleclock.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 static once_flag init_system_info_once;
@@ -401,4 +402,5 @@ pid_t GetTID() {
 #endif
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/sysinfo.h b/absl/base/internal/sysinfo.h
index 5bd1c500..18aa2e29 100644
--- a/absl/base/internal/sysinfo.h
+++ b/absl/base/internal/sysinfo.h
@@ -33,6 +33,7 @@
 #include "absl/base/port.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // Nominal core processor cycles per second of each processor.   This is _not_
@@ -58,6 +59,7 @@ using pid_t = DWORD;
 pid_t GetTID();
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_SYSINFO_H_
diff --git a/absl/base/internal/sysinfo_test.cc b/absl/base/internal/sysinfo_test.cc
index e0d9aab9..fdbbdf88 100644
--- a/absl/base/internal/sysinfo_test.cc
+++ b/absl/base/internal/sysinfo_test.cc
@@ -28,6 +28,7 @@
 #include "absl/synchronization/mutex.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 namespace {
 
@@ -95,4 +96,5 @@ TEST(SysinfoTest, LinuxGetTID) {
 
 }  // namespace
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/thread_identity.cc b/absl/base/internal/thread_identity.cc
index 678e8568..aa1add8b 100644
--- a/absl/base/internal/thread_identity.cc
+++ b/absl/base/internal/thread_identity.cc
@@ -28,6 +28,7 @@
 #include "absl/base/internal/spinlock.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 #if ABSL_THREAD_IDENTITY_MODE != ABSL_THREAD_IDENTITY_MODE_USE_CPP11
@@ -120,4 +121,5 @@ ThreadIdentity* CurrentThreadIdentityIfPresent() {
 #endif
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/thread_identity.h b/absl/base/internal/thread_identity.h
index a51722f9..18a5a750 100644
--- a/absl/base/internal/thread_identity.h
+++ b/absl/base/internal/thread_identity.h
@@ -33,6 +33,7 @@
 #include "absl/base/internal/per_thread_tls.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 
 struct SynchLocksHeld;
 struct SynchWaitParams;
@@ -236,5 +237,6 @@ inline ThreadIdentity* CurrentThreadIdentityIfPresent() {
 #endif
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 #endif  // ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
diff --git a/absl/base/internal/thread_identity_test.cc b/absl/base/internal/thread_identity_test.cc
index ecb8af68..f39f11d2 100644
--- a/absl/base/internal/thread_identity_test.cc
+++ b/absl/base/internal/thread_identity_test.cc
@@ -25,6 +25,7 @@
 #include "absl/synchronization/mutex.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 namespace {
 
@@ -123,4 +124,5 @@ TEST(ThreadIdentityTest, ReusedThreadIdentityMutexTest) {
 
 }  // namespace
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/throw_delegate.cc b/absl/base/internal/throw_delegate.cc
index 46dc573c..5466e0f3 100644
--- a/absl/base/internal/throw_delegate.cc
+++ b/absl/base/internal/throw_delegate.cc
@@ -22,6 +22,7 @@
 #include "absl/base/internal/raw_logging.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 namespace {
@@ -103,4 +104,5 @@ void ThrowStdBadFunctionCall() { Throw(std::bad_function_call()); }
 void ThrowStdBadAlloc() { Throw(std::bad_alloc()); }
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/base/internal/throw_delegate.h b/absl/base/internal/throw_delegate.h
index 70e2d770..d34ff79c 100644
--- a/absl/base/internal/throw_delegate.h
+++ b/absl/base/internal/throw_delegate.h
@@ -20,6 +20,7 @@
 #include <string>
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 // Helper functions that allow throwing exceptions consistently from anywhere.
@@ -66,6 +67,7 @@ namespace base_internal {
 // [[noreturn]] void ThrowStdBadArrayNewLength();
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
diff --git a/absl/base/internal/unaligned_access.h b/absl/base/internal/unaligned_access.h
index c5724362..f20a8694 100644
--- a/absl/base/internal/unaligned_access.h
+++ b/absl/base/internal/unaligned_access.h
@@ -65,6 +65,7 @@ void __sanitizer_unaligned_store64(void *p, uint64_t v);
 }  // extern "C"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 
 inline uint16_t UnalignedLoad16(const void *p) {
   return __sanitizer_unaligned_load16(p);
@@ -90,6 +91,7 @@ inline void UnalignedStore64(void *p, uint64_t v) {
   __sanitizer_unaligned_store64(p, v);
 }
 
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) (absl::UnalignedLoad16(_p))
@@ -158,6 +160,7 @@ inline void UnalignedStore64(void *p, uint64_t v) {
 // so we do that.
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace internal {
 
 struct Unaligned16Struct {
@@ -171,6 +174,7 @@ struct Unaligned32Struct {
 } ABSL_ATTRIBUTE_PACKED;
 
 }  // namespace internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
@@ -186,6 +190,7 @@ struct Unaligned32Struct {
        (_val))
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 
 inline uint64_t UnalignedLoad64(const void *p) {
   uint64_t t;
@@ -195,6 +200,7 @@ inline uint64_t UnalignedLoad64(const void *p) {
 
 inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
 
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) (absl::UnalignedLoad64(_p))
@@ -211,6 +217,7 @@ inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
 // unaligned loads and stores.
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 
 inline uint16_t UnalignedLoad16(const void *p) {
   uint16_t t;
@@ -236,6 +243,7 @@ inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); }
 
 inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
 
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) (absl::UnalignedLoad16(_p))
diff --git a/absl/base/internal/unscaledcycleclock.cc b/absl/base/internal/unscaledcycleclock.cc
index a12d68bd..e0798eb9 100644
--- a/absl/base/internal/unscaledcycleclock.cc
+++ b/absl/base/internal/unscaledcycleclock.cc
@@ -27,6 +27,7 @@
 #include "absl/base/internal/sysinfo.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace base_internal {
 
 #if defined(__i386__)
@@ -96,6 +97,7 @@ double UnscaledCycleClock::Frequency() {
 #endif
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_USE_UNSCALED_CYCLECLOCK
diff --git a/absl/base/internal/unscaledcycleclock.h b/absl/base/internal/unscaledcycleclock.h
index 049f1cac..9da14d0b 100644
--- a/absl/base/internal/unscaledcycleclock.h
+++ b/absl/base/internal/unscaledcycleclock.h
@@ -84,6 +84,7 @@
 #define ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
 #endif
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace time_internal {
 class UnscaledCycleClockWrapperForGetCurrentTime;
 }  // namespace time_internal
@@ -113,6 +114,7 @@ class UnscaledCycleClock {
 };
 
 }  // namespace base_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 #endif  // ABSL_USE_UNSCALED_CYCLECLOCK