Add RenderFrameHostDelegate and plumb it through all the necessary classes.

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 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/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 325 matching lines @@
 WebContentsImpl::WebContentsImpl(
     BrowserContext* browser_context,
     WebContentsImpl* opener)
     : delegate_(NULL),
       controller_(this, browser_context),
       render_view_host_delegate_view_(NULL),
       opener_(opener),
 #if defined(OS_WIN) && defined(USE_AURA)
       accessible_parent_(NULL),
 #endif
-      frame_tree_(new Navigator(&controller_, this), this, this, this),
+      frame_tree_(new Navigator(&controller_, this), this, this, this, this),
       is_loading_(false),
       crashed_status_(base::TERMINATION_STATUS_STILL_RUNNING),
       crashed_error_code_(0),
       waiting_for_response_(false),
       load_state_(net::LOAD_STATE_IDLE, base::string16()),
       upload_size_(0),
       upload_position_(0),
       displayed_insecure_content_(false),
       capturer_count_(0),
       should_normally_be_visible_(true),
@@ skipping 3344 matching lines @@
 }
 
 void WebContentsImpl::OnFrameRemoved(
     RenderViewHostImpl* render_view_host,
     int64 frame_id) {
    FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                      FrameDetached(render_view_host, frame_id));
 }
 
 }  // namespace content