Update gtest to 786564fa4a3c, switch to googlemock in gtest

base/allocator/allocator_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 <stdio.h>
 #include <stdlib.h>
 #include <algorithm>   // for min()
 
 #include "base/macros.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/googletest/include/gtest/gtest.h"
 
 // Number of bits in a size_t.
 static const int kSizeBits = 8 * sizeof(size_t);
 // The maximum size of a size_t.
 static const size_t kMaxSize = ~static_cast<size_t>(0);
 // Maximum positive size of a size_t if it were signed.
 static const size_t kMaxSignedSize = ((size_t(1) << (kSizeBits-1)) - 1);
 
 namespace {
 
@@ skipping 215 matching lines @@
       _aligned_free(ptr);
       _aligned_free(ptr2);
     }
   }
 }
 
 int main(int argc, char** argv) {
   testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }