Made return types of various Value::DeepCopy() implementations more specific

ceee/ie/broker/window_api_module.cc

 // Copyright (c) 2010 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.
 //
 // Window API implementation.
 //
 // Window IDs are the HWND of the top-level frame window of IE.
 
 #include "ceee/ie/broker/window_api_module.h"
 
@@ skipping 247 matching lines @@
       return;
     }
     if (first_arg->GetType() != Value::TYPE_NULL) {
       DictionaryValue* args_dict = NULL;
       if (!args.GetDictionary(0, &args_dict) || args_dict == NULL) {
         NOTREACHED() << "bad request";
         result->PostError(api_module_constants::kInvalidArgumentsError);
         return;
       }
       // Remember the arguments so that we can use them later.
-      input_dict.reset(static_cast<DictionaryValue*>(args_dict->DeepCopy()));
+      input_dict.reset(args_dict->DeepCopy());
     }
   }
 
   // Look for optional url.
   scoped_ptr<GURL> spec(new GURL(chrome::kAboutBlankURL));
   std::string url_input;
   if (input_dict.get() != NULL) {
     if (input_dict->HasKey(ext::kUrlKey)) {
       if (!input_dict->GetString(ext::kUrlKey, &url_input)) {
         NOTREACHED() << "bad request";
@@ skipping 408 matching lines @@
   DCHECK(success) << "Failed to retrieve populate tabs that we saved ourselves";
 
   FillResult(result.get(), populate_tabs);
   if (result->IsEmpty())  // This is an error!
     result->PostError(api_module_constants::kInternalErrorError);
   result->FlushAllPosts();
   return S_OK;
 }
 
 }  // namespace window_api