Ignore DevTools messages from the old inspected RVH after navigation

chrome/browser/devtools/devtools_ui_bindings.cc

 // 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.
 
 #include "chrome/browser/devtools/devtools_ui_bindings.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 263 matching lines @@
       break;
     default:
       crashed = false;
       break;
   }
   devtools_bindings_->delegate_->RenderProcessGone(crashed);
 }
 
 void DevToolsUIBindings::FrontendWebContentsObserver::
     AboutToNavigateRenderFrame(content::RenderFrameHost* render_frame_host) {
-  // TODO(creis): Create should be refactored to operate on RenderFrameHosts.
+  if (render_frame_host->GetParent())
+    return;
   devtools_bindings_->frontend_host_.reset(
-      content::DevToolsFrontendHost::Create(
-          render_frame_host->GetRenderViewHost(), devtools_bindings_));
+      content::DevToolsFrontendHost::Create(devtools_bindings_->web_contents(),
+                                            devtools_bindings_));
 }
 
 void DevToolsUIBindings::FrontendWebContentsObserver::
     DocumentOnLoadCompletedInMainFrame() {
   devtools_bindings_->DocumentOnLoadCompletedInMainFrame();
 }
 
 void DevToolsUIBindings::FrontendWebContentsObserver::
     DidNavigateMainFrame(const content::LoadCommittedDetails& details,
                          const content::FrameNavigateParams& params) {
@@ skipping 64 matching lines @@
   // Register on-load actions.
   registrar_.Add(
       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
       content::Source<ThemeService>(
           ThemeServiceFactory::GetForProfile(profile_)));
 
   embedder_message_dispatcher_.reset(
       DevToolsEmbedderMessageDispatcher::createForDevToolsFrontend(this));
 
   frontend_host_.reset(
-      content::DevToolsFrontendHost::Create(
-          web_contents_->GetRenderViewHost(), this));
+      content::DevToolsFrontendHost::Create(web_contents_, this));
 }
 
 DevToolsUIBindings::~DevToolsUIBindings() {
   if (agent_host_.get())
     agent_host_->DetachClient();
 
   for (IndexingJobsMap::const_iterator jobs_it(indexing_jobs_.begin());
        jobs_it != indexing_jobs_.end(); ++jobs_it) {
     jobs_it->second->Stop();
   }
@@ skipping 509 matching lines @@
   if (frontend_loaded_)
     return;
   frontend_loaded_ = true;
 
   // Call delegate first - it seeds importants bit of information.
   delegate_->OnLoadCompleted();
 
   UpdateTheme();
   AddDevToolsExtensionsToClient();
 }