Change browser/page action default icon defined in manifest to support hidpi.

chrome/common/extensions/extension.h

 // 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 
 #include <algorithm>
 #include <iosfwd>
 #include <map>
@@ skipping 599 matching lines @@
     return converted_from_user_script_;
   }
   const UserScriptList& content_scripts() const { return content_scripts_; }
   ExtensionAction* script_badge() const { return script_badge_.get(); }
   ExtensionAction* page_action() const { return page_action_.get(); }
   ExtensionAction* browser_action() const { return browser_action_.get(); }
   bool is_verbose_install_message() const {
     return !omnibox_keyword().empty() ||
            browser_action() ||
            (page_action() &&
-               (page_action_command() ||
-                !page_action()->default_icon_path().empty()));
+               (page_action_command() || page_action()->default_icon()));
   }
   const FileBrowserHandlerList* file_browser_handlers() const {
     return file_browser_handlers_.get();
   }
   const std::vector<PluginInfo>& plugins() const { return plugins_; }
   const std::vector<NaClModuleInfo>& nacl_modules() const {
     return nacl_modules_;
   }
   const std::vector<InputComponentInfo>& input_components() const {
     return input_components_;
@@ skipping 582 matching lines @@
 
   UpdatedExtensionPermissionsInfo(
       const Extension* extension,
       const PermissionSet* permissions,
       Reason reason);
 };
 
 } // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_H_