Update gtest to 786564fa4a3c, switch to googlemock in gtest

base/cpu_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/cpu.h"
 #include "build/build_config.h"
 
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/googletest/include/gtest/gtest.h"
 
 #if _MSC_VER >= 1700
 // C4752: found Intel(R) Advanced Vector Extensions; consider using /arch:AVX.
 #pragma warning(disable: 4752)
 #endif
 
 // Tests whether we can run extended instructions represented by the CPU
 // information. This test actually executes some extended instructions (such as
 // MMX, SSE, etc.) supported by the CPU and sees we can run them without
 // "undefined instruction" exceptions. That is, this test succeeds when this
@@ skipping 89 matching lines @@
   }
 
   if (cpu.has_avx2()) {
     // Execute an AVX 2 instruction.
     __asm vpunpcklbw ymm0, ymm0, ymm0
   }
 #endif  // _MSC_VER >= 1700
 #endif  // defined(COMPILER_GCC)
 #endif  // defined(ARCH_CPU_X86_FAMILY)
 }