mojo/public: Include gtest.h as "gtest/gtest.h", instead of via "absolute" path.

mojo/public/cpp/bindings/tests/interface_ptr_set_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 "mojo/public/cpp/bindings/interface_ptr_set.h"
 
+#include "gtest/gtest.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/system/macros.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 #include "mojo/public/interfaces/bindings/tests/minimal_interface.mojom.h"
-#include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace common {
 namespace {
 
 class MinimalInterfaceImpl : public test::MinimalInterface {
  public:
   explicit MinimalInterfaceImpl(
       InterfaceRequest<test::MinimalInterface> request)
       : binding_(this, request.Pass()) {}
@@ skipping 87 matching lines @@
   for (size_t i = 0; i < kNumObjects; i++) {
     int expected = (i < kNumObjects / 2 ? 1 : 2);
     EXPECT_EQ(expected, impls[i]->call_count());
   }
   EXPECT_EQ(0u, intrfc_ptr_set.size());
 }
 
 }  // namespace
 }  // namespace common
 }  // namespace mojo