[DRAFT] Create RenderFrameHostManager.

chrome/browser/extensions/api/web_navigation/frame_navigation_state.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 "chrome/browser/extensions/api/web_navigation/frame_navigation_state.h"
 
 #include "base/logging.h"
 #include "chrome/common/url_constants.h"
 #include "extensions/common/constants.h"
 
@@ skipping 141 matching lines @@
     if (frame_id == main_frame_id_)
       main_frame_id_ = FrameID();
     frame_state_map_.erase(frame_id);
     frame_ids_.erase(frame_id);
   }
 }
 
 void FrameNavigationState::UpdateFrame(FrameID frame_id, const GURL& url) {
   FrameIdToStateMap::iterator frame_state = frame_state_map_.find(frame_id);
   if (frame_state == frame_state_map_.end()) {
-    NOTREACHED();
+    // TODO(creis): Diagnose.
+    //NOTREACHED();
     return;
   }
   frame_state->second.url = url;
 }
 
 bool FrameNavigationState::IsValidFrame(FrameID frame_id) const {
   FrameIdToStateMap::const_iterator frame_state =
       frame_state_map_.find(frame_id);
   return (frame_state != frame_state_map_.end());
 }
 
 GURL FrameNavigationState::GetUrl(FrameID frame_id) const {
   FrameIdToStateMap::const_iterator frame_state =
       frame_state_map_.find(frame_id);
   if (frame_state == frame_state_map_.end()) {
-    NOTREACHED();
+    // TODO(creis): Diagnose.
+    //NOTREACHED();
     return GURL();
   }
   if (frame_state->second.is_iframe_srcdoc)
     return GURL(content::kAboutSrcDocURL);
   return frame_state->second.url;
 }
 
 bool FrameNavigationState::IsMainFrame(FrameID frame_id) const {
   FrameIdToStateMap::const_iterator frame_state =
       frame_state_map_.find(frame_id);
@@ skipping 47 matching lines @@
 }
 
 bool FrameNavigationState::GetParsingFinished(FrameID frame_id) const {
   FrameIdToStateMap::const_iterator frame_state =
       frame_state_map_.find(frame_id);
   return (frame_state == frame_state_map_.end() ||
           !frame_state->second.is_parsing);
 }
 
 void FrameNavigationState::SetNavigationCommitted(FrameID frame_id) {
-  DCHECK(frame_state_map_.find(frame_id) != frame_state_map_.end());
+  // TODO(creis): Diagnose.
+  if (frame_state_map_.find(frame_id) == frame_state_map_.end())
+    return;
+  //DCHECK(frame_state_map_.find(frame_id) != frame_state_map_.end());
   frame_state_map_[frame_id].is_committed = true;
   if (frame_state_map_[frame_id].is_main_frame)
     main_frame_id_ = frame_id;
 }
 
 bool FrameNavigationState::GetNavigationCommitted(FrameID frame_id) const {
   FrameIdToStateMap::const_iterator frame_state =
       frame_state_map_.find(frame_id);
   return (frame_state != frame_state_map_.end() &&
           frame_state->second.is_committed);
 }
 
 void FrameNavigationState::SetIsServerRedirected(FrameID frame_id) {
   DCHECK(frame_state_map_.find(frame_id) != frame_state_map_.end());
   frame_state_map_[frame_id].is_server_redirected = true;
 }
 
 bool FrameNavigationState::GetIsServerRedirected(FrameID frame_id) const {
   FrameIdToStateMap::const_iterator frame_state =
       frame_state_map_.find(frame_id);
   return (frame_state != frame_state_map_.end() &&
           frame_state->second.is_server_redirected);
 }
 
 }  // namespace extensions