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

chrome/browser/extensions/api/extension_action/extension_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_actions_api.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/string_number_conversions.h"
@@ skipping 444 matching lines @@
         icon.AddRepresentation(gfx::ImageSkiaRep(bitmap, kIconSizes[i].scale));
       }
     }
 
     extension_action_->SetIcon(tab_id_, gfx::Image(icon));
   } else if (details_->GetInteger("iconIndex", &icon_index)) {
     // If --enable-script-badges is on there might legitimately be an iconIndex
     // set. Until we decide what to do with that, ignore.
     if (!GetExtension()->page_action())
       return true;
-    if (icon_index < 0 ||
-        static_cast<size_t>(icon_index) >=
-            extension_action_->icon_paths()->size()) {
+    if (!extension_action_->IsValidIconIndex(icon_index)) {
       error_ = kIconIndexOutOfBounds;
       return false;
     }
     extension_action_->SetIcon(tab_id_, gfx::Image());
     extension_action_->SetIconIndex(tab_id_, icon_index);
   } else {
     EXTENSION_FUNCTION_VALIDATE(false);
   }
   NotifyChange();
   return true;
@@ skipping 75 matching lines @@
 bool ExtensionActionGetBadgeBackgroundColorFunction::RunExtensionAction() {
   ListValue* list = new ListValue();
   SkColor color = extension_action_->GetBadgeBackgroundColor(tab_id_);
   list->Append(Value::CreateIntegerValue(SkColorGetR(color)));
   list->Append(Value::CreateIntegerValue(SkColorGetG(color)));
   list->Append(Value::CreateIntegerValue(SkColorGetB(color)));
   list->Append(Value::CreateIntegerValue(SkColorGetA(color)));
   SetResult(list);
   return true;
 }