Ignore DevTools messages from the old inspected RVH after navigation

chrome/browser/devtools/devtools_ui_bindings.cc

Index: chrome/browser/devtools/devtools_ui_bindings.cc
diff --git a/chrome/browser/devtools/devtools_ui_bindings.cc b/chrome/browser/devtools/devtools_ui_bindings.cc
index 3abcde8a4f0500f0069617ae5f8153e30bcd5d86..c3bf082da359ea2051a745744cc27436ae21fa8c 100644
--- a/chrome/browser/devtools/devtools_ui_bindings.cc
+++ b/chrome/browser/devtools/devtools_ui_bindings.cc
@@ -281,10 +281,11 @@ void DevToolsUIBindings::FrontendWebContentsObserver::RenderProcessGone(
 
 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::
@@ -369,8 +370,7 @@ DevToolsUIBindings::DevToolsUIBindings(content::WebContents* web_contents)
       DevToolsEmbedderMessageDispatcher::createForDevToolsFrontend(this));
 
   frontend_host_.reset(
-      content::DevToolsFrontendHost::Create(
-          web_contents_->GetRenderViewHost(), this));
+      content::DevToolsFrontendHost::Create(web_contents_, this));
 }
 
 DevToolsUIBindings::~DevToolsUIBindings() {