Export of internal Abseil changes.

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fa894a667a3bebbe479539c8d5e829beebf36c27 by Abseil Team <absl-team@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 216855907

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59e0a42fa9045eb164573b82ce625248bd9999f3 by Jon Cohen <cohenjon@google.com>:

Some edits to the documentation for absl::Hash as I was reading through it.

Itemized changes:
  * implement -> implements for grammar
  * Fix an incomplete sentence
  * specify *any* type T as opposed to *a* type T ? this is just the language I tend to see for these sorts of concepts in math and makes it more clear that we?re talking about a set of all types T satisfying these constraints
  * add arguments to comine() and combine_contiguous() ? this was mostly because for hash_continuous there was a reference to `size` elements without any mention of what `size` was.

PiperOrigin-RevId: 216766923

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c2a744d0f70ec5a079c22502b7a7ca72805a29dc by Shaindel Schwartz <shaindel@google.com>:

Remove unneeded include.

PiperOrigin-RevId: 216703710

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ad22fc4e3d236f7bd354b61e0fa37ea524a7cf5e by Shaindel Schwartz <shaindel@google.com>:

Fix typos.

PiperOrigin-RevId: 216699071
GitOrigin-RevId: fa894a667a3bebbe479539c8d5e829beebf36c27
Change-Id: I35c8d8be66043aad9f17bbb867e69acb770bd1b0

1 files changed, 1 insertions, 1 deletions

diff --git a/absl/container/flat_hash_map_test.cc b/absl/container/flat_hash_map_test.cc
index 10a781f..2c6f251 100644
--- a/absl/container/flat_hash_map_test.cc
+++ b/absl/container/flat_hash_map_test.cc
@@ -94,7 +94,7 @@ TEST(FlatHashMap, IteratesMsan) {
   }
 }
 
-// Demonstration of the "Lazy Key" pattern.  This uses heterogenous insert to
+// Demonstration of the "Lazy Key" pattern.  This uses heterogeneous insert to
 // avoid creating expensive key elements when the item is already present in the
 // map.
 struct LazyInt {