Googletest export

Remove the CMAKE_CXX_STANDARD from GoogleTest's CMakeLists.txt

This causes ABI issues since it can create a mixed-mode build.  The
value should be inherited from the top-level build if it needs to be
set.

PiperOrigin-RevId: 294730724

CMakeLists.txt

@@ -10,11 +10,7 @@ endif (POLICY CMP0048)
 project(googletest-distribution)
 set(GOOGLETEST_VERSION 1.10.0)
 
-if (CMAKE_VERSION VERSION_LESS "3.1")
-  add_definitions(-std=c++11)
-else()
-  set(CMAKE_CXX_STANDARD 11)
-  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.1")
   if(NOT CYGWIN AND NOT MSYS)
     set(CMAKE_CXX_EXTENSIONS OFF)
   endif()