Fix memory leak in AsyncExtensionFunction.

chrome/browser/extensions/extension_toolstrip_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_toolstrip_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/extensions/extension_host.h"
@@ skipping 49 matching lines @@
 
 bool ToolstripExpandFunction::RunImpl() {
   if (!ToolstripFunction::RunImpl())
     return false;
   if (toolstrip_->height != 0) {
     error_ = kAlreadyExpandedError;
     return false;
   }
 
   EXTENSION_FUNCTION_VALIDATE(args_->IsType(Value::TYPE_DICTIONARY));
-  const DictionaryValue* args = static_cast<const DictionaryValue*>(args_);
+  const DictionaryValue* args = args_as_dictionary();
 
   int height;
   EXTENSION_FUNCTION_VALIDATE(args->GetInteger(keys::kHeightKey,
                                                &height));
   EXTENSION_FUNCTION_VALIDATE(height >= 0);
   if (height < kMinHeight || height > kMaxHeight) {
     error_ = kBadHeightError;
     return false;
   }
 
@@ skipping 18 matching lines @@
     return false;
 
   if (toolstrip_->height == 0) {
     error_ = kAlreadyCollapsedError;
     return false;
   }
 
   GURL url;
   if (args_->GetType() != Value::TYPE_NULL) {
     EXTENSION_FUNCTION_VALIDATE(args_->IsType(Value::TYPE_DICTIONARY));
-    const DictionaryValue* args = static_cast<const DictionaryValue*>(args_);
+    const DictionaryValue* args = args_as_dictionary();
 
     if (args->HasKey(keys::kUrlKey)) {
       std::string url_string;
       EXTENSION_FUNCTION_VALIDATE(args->GetString(keys::kUrlKey,
                                                   &url_string));
       url = dispatcher()->url().Resolve(url_string);
       if (!url.is_valid()) {
         error_ = kInvalidURLError;
         return false;
       }
@@ skipping 36 matching lines @@
 void ToolstripEventRouter::OnToolstripCollapsed(Profile* profile,
                                                 int routing_id,
                                                 const GURL &url) {
   ListValue args;
   DictionaryValue* obj = new DictionaryValue();
   if (!url.is_empty())
     obj->SetString(keys::kUrlKey, url.spec());
   args.Append(obj);
   DispatchEvent(profile, routing_id, events::kOnToolstripCollapsed, args);
 }