Fix unused variable warning.

Change-Id: I52f73943194039697da6880d2da54821b2498336

third_party/googletest/README.libvpx

@@ -12,4 +12,4 @@ failures, various options for running the tests, and XML test report
 generation.
 
 Local Modifications:
-None.
\ No newline at end of file
+Removed unused declarations of kPathSeparatorString to have warning free build.
\ No newline at end of file

third_party/googletest/src/src/gtest-all.cc

@@ -7904,7 +7904,6 @@ namespace internal {
 // of them.
 const char kPathSeparator = '\\';
 const char kAlternatePathSeparator = '/';
-const char kPathSeparatorString[] = "\\";
 const char kAlternatePathSeparatorString[] = "/";
 # if GTEST_OS_WINDOWS_MOBILE
 // Windows CE doesn't have a current directory. You should not use
@@ -7918,7 +7917,6 @@ const char kCurrentDirectoryString[] = ".\\";
 # endif  // GTEST_OS_WINDOWS_MOBILE
 #else
 const char kPathSeparator = '/';
-const char kPathSeparatorString[] = "/";
 const char kCurrentDirectoryString[] = "./";
 #endif  // GTEST_OS_WINDOWS