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

extensions/common/matcher/url_matcher_factory_unittest.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 "extensions/common/matcher/url_matcher_factory.h"
 
 #include "base/basictypes.h"
 #include "base/format_macros.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "extensions/common/matcher/url_matcher_constants.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 namespace keys = url_matcher_constants;
 
 TEST(URLMatcherFactoryTest, CreateFromURLFilterDictionary) {
@@ skipping 310 matching lines @@
                          kIsUrlCaseSensitive, kIsUrlLowerCaseEnforced, url),
   };
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(case_tests); ++i) {
     SCOPED_TRACE(base::StringPrintf("Iteration: %" PRIuS, i));
     case_tests[i].Test();
   }
 }
 
 }  // namespace extensions