Update gtest to 786564fa4a3c, switch to googlemock in gtest

base/trace_event/heap_profiler_allocation_context_tracker_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/memory/ref_counted.h"
 #include "base/trace_event/heap_profiler_allocation_context.h"
 #include "base/trace_event/heap_profiler_allocation_context_tracker.h"
 #include "base/trace_event/trace_event.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/googletest/include/gtest/gtest.h"
 
 namespace base {
 namespace trace_event {
 
 // Define all strings once, because the pseudo stack requires pointer equality,
 // and string interning is unreliable.
 const char kCupcake[] = "Cupcake";
 const char kDonut[] = "Donut";
 const char kEclair[] = "Eclair";
 const char kFroyo[] = "Froyo";
@@ skipping 199 matching lines @@
 
   {
     AllocationContext ctx = AllocationContextTracker::GetContextSnapshot();
     ASSERT_EQ(kCupcake, ctx.backtrace.frames[0]);
     ASSERT_EQ(kFroyo, ctx.backtrace.frames[11]);
   }
 }
 
 }  // namespace trace_event
 }  // namespace base