Change FrameTreeNode id from int64 to int.

content/browser/loader/navigation_url_loader_factory.h

 // 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.
 
 #ifndef CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_FACTORY_H_
 #define CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_FACTORY_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/loader/navigation_url_loader.h"
 
 namespace content {
 
 // NavigationURLLoader::Create uses the currently registered factory to create
 // the loader. This is intended for testing.
 class NavigationURLLoaderFactory {
  public:
   virtual scoped_ptr<NavigationURLLoader> CreateLoader(
       BrowserContext* browser_context,
-      int64 frame_tree_node_id,
+      int frame_tree_node_id,
       scoped_ptr<NavigationRequestInfo> request_info,
       NavigationURLLoaderDelegate* delegate) = 0;
 
  protected:
   NavigationURLLoaderFactory() {}
   virtual ~NavigationURLLoaderFactory() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NavigationURLLoaderFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_FACTORY_H_