Update gtest to 786564fa4a3c, switch to googlemock in gtest

base/native_library_unittest.cc

 // Copyright 2015 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/file_path.h"
 #include "base/native_library.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/googletest/include/gtest/gtest.h"
 
 namespace base {
 
 const FilePath::CharType kDummyLibraryPath[] =
     FILE_PATH_LITERAL("dummy_library");
 
 TEST(NativeLibraryTest, LoadFailure) {
   NativeLibraryLoadError error;
   NativeLibrary library =
       LoadNativeLibrary(FilePath(kDummyLibraryPath), &error);
   EXPECT_TRUE(library == nullptr);
   EXPECT_FALSE(error.ToString().empty());
 }
 
 // |error| is optional and can be null.
 TEST(NativeLibraryTest, LoadFailureWithNullError) {
   NativeLibrary library =
       LoadNativeLibrary(FilePath(kDummyLibraryPath), nullptr);
   EXPECT_TRUE(library == nullptr);
 }
 
 }  // namespace base