Update gtest to 786564fa4a3c, switch to googlemock in gtest

base/files/memory_mapped_file_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/files/memory_mapped_file.h"
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/googletest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 namespace base {
 
 namespace {
 
 // Create a temporary buffer and fill it with a watermark sequence.
 scoped_ptr<uint8[]> CreateTestBuffer(size_t size, size_t offset) {
   scoped_ptr<uint8[]> buf(new uint8[size]);
   for (size_t i = 0; i < size; ++i)
@@ skipping 141 matching lines @@
   map.Initialize(file.Pass(), region);
   ASSERT_EQ(kPartialSize, map.length());
   ASSERT_TRUE(map.data() != NULL);
   EXPECT_TRUE(map.IsValid());
   ASSERT_TRUE(CheckBufferContents(map.data(), kPartialSize, kOffset));
 }
 
 }  // namespace
 
 }  // namespace base