Fix webrequest api for webview in webui

extensions/browser/extension_function_dispatcher.cc

 // Copyright 2014 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 "extensions/browser/extension_function_dispatcher.h"
 
 #include "base/bind.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 211 matching lines @@
 // static
 void ExtensionFunctionDispatcher::DispatchOnIOThread(
     InfoMap* extension_info_map,
     void* profile_id,
     int render_process_id,
     base::WeakPtr<ExtensionMessageFilter> ipc_sender,
     int routing_id,
     const ExtensionHostMsg_Request_Params& params) {
   const Extension* extension =
       extension_info_map->extensions().GetByID(params.extension_id);
-  if (!extension)
-    return;
 
   ExtensionFunction::ResponseCallback callback(
       base::Bind(&IOThreadResponseCallback, ipc_sender, routing_id,
                  params.request_id));
 
   scoped_refptr<ExtensionFunction> function(
       CreateExtensionFunction(params,
                               extension,
                               render_process_id,
                               extension_info_map->process_map(),
                               g_global_io_data.Get().api.get(),
                               profile_id,
                               callback));
   if (!function.get())
     return;
 
   IOThreadExtensionFunction* function_io =
       function->AsIOThreadExtensionFunction();
   if (!function_io) {
     NOTREACHED();
     return;
   }
   function_io->set_ipc_sender(ipc_sender, routing_id);
   function_io->set_extension_info_map(extension_info_map);
-  function->set_include_incognito(
-      extension_info_map->IsIncognitoEnabled(extension->id()));
+  if (extension) {
+    function->set_include_incognito(
+        extension_info_map->IsIncognitoEnabled(extension->id()));
+  }
 
   if (!CheckPermissions(function.get(), params, callback))
     return;
 
+  if (!extension) {
+    // Skip all of the UMA, quota, event page, activity logging stuff if there
+    // isn't an extension, e.g. if the function call was from WebUI.
+    function->Run()->Execute();
+    return;
+  }
+
   QuotaService* quota = extension_info_map->GetQuotaService();
   std::string violation_error = quota->Assess(extension->id(),
                                               function.get(),
                                               &params.arguments,
                                               base::TimeTicks::Now());
   if (violation_error.empty()) {
     scoped_ptr<base::ListValue> args(params.arguments.DeepCopy());
     NotifyApiFunctionCalled(extension->id(),
                             params.name,
                             args.Pass(),
@@ skipping 188 matching lines @@
 
 // static
 void ExtensionFunctionDispatcher::SendAccessDenied(
     const ExtensionFunction::ResponseCallback& callback) {
   base::ListValue empty_list;
   callback.Run(ExtensionFunction::FAILED, empty_list,
                "Access to extension API denied.");
 }
 
 }  // namespace extensions