Move navigation and frame tree classes to a new frame_host/ directory.

content/browser/renderer_host/frame_tree.h

Index: content/browser/renderer_host/frame_tree.h
diff --git a/content/browser/renderer_host/frame_tree.h b/content/browser/renderer_host/frame_tree.h
deleted file mode 100644
index 8c452e93e5d7fb70b742baaf9c6933c62815fcac..0000000000000000000000000000000000000000
--- a/content/browser/renderer_host/frame_tree.h
+++ /dev/null
@@ -1,103 +0,0 @@
-// Copyright 2013 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_RENDERER_HOST_FRAME_TREE_H_
-#define CONTENT_BROWSER_RENDERER_HOST_FRAME_TREE_H_
-
-#include <string>
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "content/browser/renderer_host/frame_tree_node.h"
-#include "content/common/content_export.h"
-
-namespace content {
-
-class FrameTreeNode;
-class RenderProcessHost;
-class RenderViewHostImpl;
-
-// Represents the frame tree for a page. With the exception of the main frame,
-// all FrameTreeNodes will be created/deleted in response to frame attach and
-// detach events in the DOM.
-//
-// The main frame's FrameTreeNode is special in that it is reused. This allows
-// it to serve as an anchor for state that needs to persist across top-level
-// page navigations.
-//
-// TODO(ajwong): Move NavigationController ownership to the main frame
-// FrameTreeNode. Possibly expose access to it from here.
-//
-// TODO(ajwong): Currently this class only contains FrameTreeNodes for
-// subframes if the --site-per-process flag is enabled.
-//
-// This object is only used on the UI thread.
-class CONTENT_EXPORT FrameTree {
- public:
-  FrameTree();
-  ~FrameTree();
-
-  // Returns the FrameTreeNode with the given |frame_id|.
-  FrameTreeNode* FindByID(int64 frame_id);
-
-  // Executes |on_node| on each node in the frame tree.  If |on_node| returns
-  // false, terminates the iteration immediately. Returning false is useful
-  // if |on_node| is just doing a search over the tree.
-  void ForEach(const base::Callback<bool(FrameTreeNode*)>& on_node) const;
-
-  // After the FrameTree is created, or after SwapMainFrame() has been called,
-  // the root node does not yet have a frame id. This is allocated by the
-  // renderer and is published to the browser process on the first navigation
-  // after a swap. These two functions are used to set the root node's frame
-  // id.
-  //
-  // TODO(ajwong): Remove these once RenderFrameHost's routing id replaces
-  // frame_id.
-  bool IsFirstNavigationAfterSwap() const;
-  void OnFirstNavigationAfterSwap(int main_frame_id);
-
-  // Frame tree manipulation routines.
-  void AddFrame(int render_frame_host_id, int64 parent_frame_id,
-                int64 frame_id, const std::string& frame_name);
-  void RemoveFrame(int64 parent_frame_id, int64 frame_id);
-  void SetFrameUrl(int64 frame_id, const GURL& url);
-
-  // Resets the FrameTree and changes RenderFrameHost for the main frame.
-  // This destroys most of the frame tree but retains the root node so that
-  // navigation state may be kept on it between process swaps. Used to
-  // support bookkeeping for top-level navigations.
-  //
-  // If |main_frame| is NULL, reset tree to initially constructed state.
-  //
-  // TODO(ajwong): This function should not be given a |main_frame|. This is
-  // required currently because the RenderViewHost owns its main frame. When
-  // that relation is fixed, the FrameTree should be responsible for
-  // created/destroying the main frame on the swap.
-  void SwapMainFrame(RenderFrameHostImpl* main_frame);
-
-  // Convenience accessor for the main frame's RenderFrameHostImpl.
-  RenderFrameHostImpl* GetMainFrame() const;
-
-  // Allows a client to listen for frame removal.
-  void SetFrameRemoveListener(
-      const base::Callback<void(RenderViewHostImpl*, int64)>& on_frame_removed);
-
-  FrameTreeNode* GetRootForTesting() { return root_.get(); }
-
- private:
-  scoped_ptr<FrameTreeNode> CreateNode(int64 frame_id,
-                                       const std::string& frame_name,
-                                       int render_frame_host_id,
-                                       RenderProcessHost* render_process_host);
-
-  scoped_ptr<FrameTreeNode> root_;
-
-  base::Callback<void(RenderViewHostImpl*, int64)> on_frame_removed_;
-
-  DISALLOW_COPY_AND_ASSIGN(FrameTree);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_FRAME_TREE_H_