Use a direct include of strings headers in chrome/common/, part 1.

chrome/common/child_process_logging_mac_unittest.mm

 // Copyright (c) 2011 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 "chrome/common/child_process_logging.h"
 
 #include <map>
 #include <string>
 
 #import <Foundation/Foundation.h>
 
 #include "base/debug/crash_logging.h"
 #include "base/logging.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 typedef PlatformTest ChildProcessLoggingTest;
 
 namespace {
 
 // Class to mock breakpad's setkeyvalue/clearkeyvalue functions needed for
 // SetActiveRendererURLImpl.
 // The Keys are stored in a static dictionary and methods are provided to
@@ skipping 110 matching lines @@
   EXPECT_EQ(0u, mock.CountDictionaryEntries());
 
 
   // Check that overflow works correctly.
   SetActiveURLWithMock(GURL(overflow_url.c_str()));
   EXPECT_TRUE(mock.VerifyDictionaryContents(
       overflow_url.substr(0, max_num_chars_stored_in_dump)));
   SetActiveURLWithMock(GURL());
   EXPECT_EQ(0u, mock.CountDictionaryEntries());
 }