Update to current gtest/gmock.

testing/gmock/src/gmock-internal-utils.cc

 // Copyright 2007, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 85 matching lines @@
   // guarantees that the following use of failure_reporter is
   // thread-safe.  We may need to add additional synchronization to
   // protect failure_reporter if we port Google Mock to other
   // compilers.
   static FailureReporterInterface* const failure_reporter =
       new GoogleTestFailureReporter();
   return failure_reporter;
 }
 
 // Protects global resources (stdout in particular) used by Log().
-static Mutex g_log_mutex(Mutex::NO_CONSTRUCTOR_NEEDED_FOR_STATIC_MUTEX);
+static GTEST_DEFINE_STATIC_MUTEX_(g_log_mutex);
 
 // Returns true iff a log with the given severity is visible according
 // to the --gmock_verbose flag.
 bool LogIsVisible(LogSeverity severity) {
   if (GMOCK_FLAG(verbose) == kInfoVerbosity) {
     // Always show the log if --gmock_verbose=info.
     return true;
   } else if (GMOCK_FLAG(verbose) == kErrorVerbosity) {
     // Always hide it if --gmock_verbose=error.
     return false;
@@ skipping 47 matching lines @@
     }
     std::cout << "Stack trace:\n"
          << ::testing::internal::GetCurrentOsStackTraceExceptTop(
              ::testing::UnitTest::GetInstance(), actual_to_skip);
   }
   std::cout << ::std::flush;
 }
 
 }  // namespace internal
 }  // namespace testing