Update gtest to 786564fa4a3c, switch to googlemock in gtest

base/memory/discardable_shared_memory_unittest.cc

 // Copyright 2014 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/basictypes.h"
 #include "base/memory/discardable_shared_memory.h"
 #include "base/process/process_metrics.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/googletest/include/gtest/gtest.h"
 
 namespace base {
 namespace {
 
 class TestDiscardableSharedMemory : public DiscardableSharedMemory {
  public:
   TestDiscardableSharedMemory() {}
 
   explicit TestDiscardableSharedMemory(SharedMemoryHandle handle)
       : DiscardableSharedMemory(handle) {}
@@ skipping 360 matching lines @@
 
   // Check that reading memory after it has been purged is returning
   // zero-filled pages.
   uint8 expected_data[kDataSize] = {};
   EXPECT_EQ(memcmp(memory2.memory(), expected_data, kDataSize), 0);
 }
 #endif
 
 }  // namespace
 }  // namespace base