Remove "using namespace std" from stubs/common.h

This prevents the contents of the std namespace from being effectively
pulled into the top-level namespace in all translation units that
include common.h. I left in individual using statements for a few common
things like std::set and std::map, because it did not seem worth going
through the churn of updating the whole codebase to fix those right now.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/google/protobuf/compiler/csharp/csharp_field_base.cc b/src/google/protobuf/compiler/csharp/csharp_field_base.cc
index 139cc753..ebb8fbc2 100644
--- a/src/google/protobuf/compiler/csharp/csharp_field_base.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_field_base.cc
@@ -322,9 +322,9 @@ std::string FieldGeneratorBase::default_value(const FieldDescriptor* descriptor)
       }
     case FieldDescriptor::TYPE_DOUBLE: {
       double value = descriptor->default_value_double();
-      if (value == numeric_limits<double>::infinity()) {
+      if (value == std::numeric_limits<double>::infinity()) {
         return "double.PositiveInfinity";
-      } else if (value == -numeric_limits<double>::infinity()) {
+      } else if (value == -std::numeric_limits<double>::infinity()) {
         return "double.NegativeInfinity";
       } else if (MathLimits<double>::IsNaN(value)) {
         return "double.NaN";
@@ -333,9 +333,9 @@ std::string FieldGeneratorBase::default_value(const FieldDescriptor* descriptor)
     }
     case FieldDescriptor::TYPE_FLOAT: {
       float value = descriptor->default_value_float();
-      if (value == numeric_limits<float>::infinity()) {
+      if (value == std::numeric_limits<float>::infinity()) {
         return "float.PositiveInfinity";
-      } else if (value == -numeric_limits<float>::infinity()) {
+      } else if (value == -std::numeric_limits<float>::infinity()) {
         return "float.NegativeInfinity";
       } else if (MathLimits<float>::IsNaN(value)) {
         return "float.NaN";