Use a direct include of strings headers in extensions/, google_apis/, gpu/.

gpu/config/gpu_test_expectations_parser.cc

 // Copyright (c) 2012 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 "gpu/config/gpu_test_expectations_parser.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
-#include "base/string_number_conversions.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 
 namespace gpu {
 
 namespace {
 
 enum LineParserStage {
   kLineParserBegin = 0,
   kLineParserBugID,
   kLineParserConfigs,
   kLineParserColon,
@@ skipping 471 matching lines @@
                          message.c_str()));
 }
 
 GPUTestExpectationsParser:: GPUTestExpectationEntry::GPUTestExpectationEntry()
     : test_expectation(0),
       line_number(0) {
 }
 
 }  // namespace gpu