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

chrome/common/extensions/command.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 "chrome/common/extensions/command.h"
 
 #include "base/logging.h"
-#include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "extensions/common/error_utils.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace errors = extension_manifest_errors;
 namespace keys = extension_manifest_keys;
 namespace values = extension_manifest_values;
@@ skipping 436 matching lines @@
   extension_data->SetString("description", command_description);
   extension_data->SetBoolean("active", active);
   extension_data->SetString("keybinding", accelerator().GetShortcutText());
   extension_data->SetString("command_name", command_name());
   extension_data->SetString("extension_id", extension->id());
 
   return extension_data;
 }
 
 }  // namespace extensions