Drive extension functions from ExtensionFunction::Run. The

chrome/browser/extensions/api/desktop_capture/desktop_capture_api.cc

 // Copyright 2013 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/desktop_capture/desktop_capture_api.h"
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
@@ skipping 58 matching lines @@
   // Keep reference to |this| to ensure the object doesn't get destroyed before
   // we return.
   scoped_refptr<DesktopCaptureChooseDesktopMediaFunction> self(this);
   if (picker_) {
     picker_.reset();
     SetResult(new base::StringValue(std::string()));
     SendResponse(true);
   }
 }
 
-bool DesktopCaptureChooseDesktopMediaFunction::RunImpl() {
+bool DesktopCaptureChooseDesktopMediaFunction::RunAsync() {
   EXTENSION_FUNCTION_VALIDATE(args_->GetSize() > 0);
 
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &request_id_));
   args_->Remove(0, NULL);
 
   scoped_ptr<api::desktop_capture::ChooseDesktopMedia::Params> params =
       api::desktop_capture::ChooseDesktopMedia::Params::Create(*args_);
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   DesktopCaptureRequestsRegistry::GetInstance()->AddRequest(
@@ skipping 203 matching lines @@
 
 void DesktopCaptureRequestsRegistry::CancelRequest(int process_id,
                                                    int request_id) {
   RequestsMap::iterator it = requests_.find(RequestId(process_id, request_id));
   if (it != requests_.end())
     it->second->Cancel();
 }
 
 
 }  // namespace extensions