Change FrameTreeNode id from int64 to int.

content/browser/loader/navigation_url_loader.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/browser/loader/navigation_url_loader.h"
 
 #include "content/browser/frame_host/navigation_request_info.h"
 #include "content/browser/loader/navigation_url_loader_factory.h"
 #include "content/browser/loader/navigation_url_loader_impl.h"
 
 namespace content {
 
 static NavigationURLLoaderFactory* g_factory = nullptr;
 
 scoped_ptr<NavigationURLLoader> NavigationURLLoader::Create(
     BrowserContext* browser_context,
-    int64 frame_tree_node_id,
+    int frame_tree_node_id,
     scoped_ptr<NavigationRequestInfo> request_info,
     NavigationURLLoaderDelegate* delegate) {
   if (g_factory) {
     return g_factory->CreateLoader(browser_context, frame_tree_node_id,
                                    request_info.Pass(), delegate);
   }
   return scoped_ptr<NavigationURLLoader>(new NavigationURLLoaderImpl(
       browser_context, frame_tree_node_id, request_info.Pass(), delegate));
 }
 
 void NavigationURLLoader::SetFactoryForTesting(
     NavigationURLLoaderFactory* factory) {
   DCHECK(g_factory == nullptr || factory == nullptr);
   g_factory = factory;
 }
 
 }  // namespace content