Fix memory leak in AsyncExtensionFunction.

chrome/browser/extensions/extension_browser_actions_api.cc

 // Copyright (c) 2009 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/extension_browser_actions_api.h"
 
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/render_messages.h"
 
 namespace {
 // Errors.
 const char kNoBrowserActionError[] =
     "This extension has no browser action specified.";
 const char kIconIndexOutOfBounds[] =
     "Browser action icon index out of bounds.";
 }
 
 bool BrowserActionFunction::RunImpl() {
   EXTENSION_FUNCTION_VALIDATE(args_->IsType(Value::TYPE_DICTIONARY));
-  details_ = static_cast<DictionaryValue*>(args_);
+  details_ = args_as_dictionary();
 
   if (details_->HasKey(L"tabId"))
     EXTENSION_FUNCTION_VALIDATE(details_->GetInteger(L"tabId", &tab_id_));
 
   Extension* extension = dispatcher()->GetExtension();
   browser_action_ = extension->browser_action();
   if (!browser_action_) {
     error_ = kNoBrowserActionError;
     return false;
   }
@@ skipping 43 matching lines @@
   for (size_t i = 0; i < arraysize(color_array); ++i) {
     EXTENSION_FUNCTION_VALIDATE(list->GetInteger(i, &color_array[i]));
   }
 
   SkColor color = SkColorSetARGB(color_array[3], color_array[0], color_array[1],
                                  color_array[2]);
   browser_action_->SetBadgeBackgroundColor(tab_id_, color);
 
   return true;
 }