Move downloads API to extensions namespace

chrome/browser/download/download_service.cc

 // Copyright (c) 2012 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/download/download_service.h"
 
 #include "base/callback.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
 #include "chrome/browser/download/download_history.h"
@@ skipping 30 matching lines @@
   download_manager_created_ = true;
 
   // In case the delegate has already been set by
   // SetDownloadManagerDelegateForTesting.
   if (!manager_delegate_.get())
     manager_delegate_.reset(new ChromeDownloadManagerDelegate(profile_));
 
   manager_delegate_->SetDownloadManager(manager);
 
 #if !defined(OS_ANDROID)
-  extension_event_router_.reset(new ExtensionDownloadsEventRouter(
-      profile_, manager));
+  extension_event_router_.reset(
+      new extensions::ExtensionDownloadsEventRouter(profile_, manager));
 #endif
 
   if (!profile_->IsOffTheRecord()) {
     HistoryService* history = HistoryServiceFactory::GetForProfile(
         profile_, Profile::EXPLICIT_ACCESS);
     history->GetNextDownloadId(
         manager_delegate_->GetDownloadIdReceiverCallback());
     download_history_.reset(new DownloadHistory(
         manager,
         scoped_ptr<DownloadHistory::HistoryAdapter>(
@@ skipping 106 matching lines @@
     // code) when the DownloadManager is shutting down. So we shut it down
     // manually earlier. See http://crbug.com/131692
     BrowserContext::GetDownloadManager(profile_)->Shutdown();
   }
 #if !defined(OS_ANDROID)
   extension_event_router_.reset();
 #endif
   manager_delegate_.reset();
   download_history_.reset();
 }