Change FrameTreeNode id from int64 to int.

content/test/test_navigation_url_loader_factory.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 "content/test/test_navigation_url_loader_factory.h"
 
 #include "content/browser/loader/navigation_url_loader.h"
 #include "content/test/test_navigation_url_loader.h"
 
 namespace content {
 
 TestNavigationURLLoaderFactory::TestNavigationURLLoaderFactory() {
   NavigationURLLoader::SetFactoryForTesting(this);
 }
 
 TestNavigationURLLoaderFactory::~TestNavigationURLLoaderFactory() {
   NavigationURLLoader::SetFactoryForTesting(NULL);
 }
 
 scoped_ptr<NavigationURLLoader> TestNavigationURLLoaderFactory::CreateLoader(
     BrowserContext* browser_context,
-    int64 frame_tree_node_id,
+    int frame_tree_node_id,
     scoped_ptr<NavigationRequestInfo> request_info,
     NavigationURLLoaderDelegate* delegate) {
   return scoped_ptr<NavigationURLLoader>(new TestNavigationURLLoader(
       request_info.Pass(), delegate));
 }
 
 }  // namespace content