Change FrameTreeNode id from int64 to int.

content/test/test_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_TEST_TEST_NAVIGATION_URL_LOADER_FACTORY_H_
 #define CONTENT_TEST_TEST_NAVIGATION_URL_LOADER_FACTORY_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/loader/navigation_url_loader_factory.h"
 
 namespace content {
 
 class NavigationURLLoader;
 
 // PlzNavigate
 // Manages creation of the NavigationURLLoaders; when registered, all created
 // NavigationURLLoaderss will be TestNavigationURLLoaderss. This automatically
 // registers itself when it goes in scope, and unregisters itself when it goes
 // out of scope. Since you can't have more than one factory registered at a
 // time, you can only have one of these objects at a time.
 class TestNavigationURLLoaderFactory : public NavigationURLLoaderFactory {
  public:
   TestNavigationURLLoaderFactory();
   ~TestNavigationURLLoaderFactory() override;
 
   // TestNavigationURLLoaderFactory implementation.
   scoped_ptr<NavigationURLLoader> CreateLoader(
       BrowserContext* browser_context,
-      int64 frame_tree_node_id,
+      int frame_tree_node_id,
       scoped_ptr<NavigationRequestInfo> request_info,
       NavigationURLLoaderDelegate* delegate) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestNavigationURLLoaderFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_TEST_NAVIGATION_URL_LOADER_FACTORY_H_