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

mojo/public/cpp/bindings/tests/validation_util.cc

 // Copyright 2016 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/tests/validation_util.h"
 
 #include <stdio.h>
 
+#include "gtest/gtest.h"
 #include "mojo/public/cpp/bindings/tests/validation_test_input_parser.h"
 #include "mojo/public/cpp/test_support/test_support.h"
-#include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace test {
 namespace validation_util {
 
 std::string GetValidationDataPath(const std::string& root,
                                   const std::string& suffix) {
   return "mojo/public/interfaces/bindings/tests/data/validation/" + root +
          suffix;
 }
@@ skipping 76 matching lines @@
         names[i].substr(0, prefix.size()) == prefix &&
         names[i].substr(names[i].size() - suffix.size()) == suffix)
       tests.push_back(names[i].substr(0, names[i].size() - suffix.size()));
   }
   return tests;
 }
 
 }  // namespace validation_util
 }  // namespace test
 }  // namespace mojo