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

chrome/browser/extensions/api/extension_action/extension_page_actions_api.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/browser/extensions/api/extension_action/extension_page_actions_api.h"
 
 #include <string>
 
 #include "base/string_number_conversions.h"
 #include "chrome/browser/extensions/api/extension_action/extension_page_actions_api_constants.h"
@@ skipping 52 matching lines @@
                                                      &icon_id));
     }
   }
 
   ExtensionAction* page_action = GetExtension()->page_action();
   if (!page_action) {
     error_ = kNoPageActionError;
     return false;
   }
 
-  if (icon_id < 0 ||
-      static_cast<size_t>(icon_id) >= page_action->icon_paths()->size()) {
+  if (!page_action->IsValidIconIndex(icon_id)) {
     error_ = (icon_id == 0) ? kNoIconSpecified : kIconIndexOutOfBounds;
     return false;
   }
 
   // Find the TabContents that contains this tab id.
   TabContents* contents = NULL;
   bool result = ExtensionTabUtil::GetTabById(
       tab_id, profile(), include_incognito(), NULL, NULL, &contents, NULL);
   if (!result || !contents) {
     error_ = ExtensionErrorUtils::FormatErrorMessage(
@@ skipping 19 matching lines @@
   return true;
 }
 
 bool EnablePageActionsFunction::RunImpl() {
   return SetPageActionEnabled(true);
 }
 
 bool DisablePageActionsFunction::RunImpl() {
   return SetPageActionEnabled(false);
 }