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

content/browser/frame_host/frame_tree.cc

 // 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.
 
-#include "content/browser/renderer_host/frame_tree.h"
+#include "content/browser/frame_host/frame_tree.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/callback.h"
-#include "content/browser/renderer_host/frame_tree_node.h"
-#include "content/browser/renderer_host/render_frame_host_impl.h"
+#include "content/browser/frame_host/frame_tree_node.h"
+#include "content/browser/frame_host/render_frame_host_impl.h"
 
 namespace content {
 
 namespace {
 // Used with FrameTree::ForEach() to search for the FrameTreeNode
 // corresponding to |frame_id|.
 bool FrameTreeNodeForId(int64 frame_id, FrameTreeNode** out_node,
                         FrameTreeNode* node) {
   if (node->frame_id() == frame_id) {
     *out_node = node;
@@ skipping 106 matching lines @@
     RenderProcessHost* render_process_host) {
   scoped_ptr<RenderFrameHostImpl> render_frame_host(
       new RenderFrameHostImpl(root_->render_frame_host()->render_view_host(),
                               this, render_frame_host_id, false));
 
   return make_scoped_ptr(new FrameTreeNode(frame_id, frame_name,
                                            render_frame_host.Pass()));
 }
 
 }  // namespace content