Change FrameTreeNode id from int64 to int.

content/browser/frame_host/frame_accessibility.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_FRAME_HOST_FRAME_ACCESSIBILITY_H_
 #define CONTENT_BROWSER_FRAME_HOST_FRAME_ACCESSIBILITY_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/singleton.h"
 #include "content/common/content_export.h"
 
 namespace content {
 
 class RenderFrameHostImpl;
 
 // This singleton class maintains the mappings necessary to link child frames
 // and guest frames into a single tree for accessibility. This class is only
 // used if accessibility is enabled.
 class CONTENT_EXPORT FrameAccessibility {
  public:
   static FrameAccessibility* GetInstance();
 
   // Add a mapping between an accessibility node of |parent_frame_host|
   // and the child frame with the given frame tree node id, in the same
   // frame tree.
   void AddChildFrame(RenderFrameHostImpl* parent_frame_host,
                      int accessibility_node_id,
-                     int64 child_frame_tree_node_id);
+                     int child_frame_tree_node_id);
 
   // Add a mapping between an accessibility node of |parent_frame_host|
   // and the main frame of the guest Webcontents with the given
   // browser plugin instance id.
   void AddGuestWebContents(RenderFrameHostImpl* parent_frame_host,
                            int accessibility_node_id,
                            int browser_plugin_instance_id);
 
   // This is called when a RenderFrameHostImpl is deleted, so invalid
   // mappings can be removed from this data structure.
@@ skipping 21 matching lines @@
   bool GetParent(RenderFrameHostImpl* child_frame_host,
                  RenderFrameHostImpl** out_parent_frame_host,
                  int* out_accessibility_node_id);
 
  private:
   FrameAccessibility();
   virtual ~FrameAccessibility();
 
   RenderFrameHostImpl* GetRFHIFromFrameTreeNodeId(
       RenderFrameHostImpl* parent_frame_host,
-      int64 child_frame_tree_node_id);
+      int child_frame_tree_node_id);
 
   // This structure stores the parent-child relationship between an
   // accessibility node in a parent frame and its child frame, where the
   // child frame may be an iframe or the main frame of a guest browser
   // plugin. It allows the accessibility code to walk both down and up
   // the "composed" accessibility tree.
   struct ChildFrameMapping {
     ChildFrameMapping();
 
     // The parent frame host. Required.
     RenderFrameHostImpl* parent_frame_host;
 
     // The id of the accessibility node that's the host of the child frame,
     // for example the accessibility node for the <iframe> element or the
     // <embed> element.
     int accessibility_node_id;
 
     // If the child frame is an iframe, this is the iframe's FrameTreeNode id,
     // otherwise 0.
-    int64 child_frame_tree_node_id;
+    int child_frame_tree_node_id;
 
     // If the child frame is a browser plugin, this is its instance id,
     // otherwise 0.
     int browser_plugin_instance_id;
   };
 
   std::vector<ChildFrameMapping> mappings_;
 
   friend struct DefaultSingletonTraits<FrameAccessibility>;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_FRAME_ACCESSIBILITY_H_