Update gtest to 786564fa4a3c, switch to googlemock in gtest

base/id_map_unittest.cc

 // Copyright (c) 2011 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/id_map.h"
 
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/googletest/include/gtest/gtest.h"
 
 namespace {
 
 class TestObject {
 };
 
 class DestructorCounter {
  public:
   explicit DestructorCounter(int* counter) : counter_(counter) {}
   ~DestructorCounter() { ++(*counter_); }
@@ skipping 343 matching lines @@
   const int64_t kId1 = 999999999999999999;
 
   map.AddWithID(&obj1, kId1);
   EXPECT_EQ(&obj1, map.Lookup(kId1));
 
   map.Remove(kId1);
   EXPECT_TRUE(map.IsEmpty());
 }
 
 }  // namespace