Revert of [DevTools] Do not use AboutToNavigateRenderFrame in DevToolsUIBindings.

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 43348883acbff49dfccea16be6c58b5a3a1c3218..8ebae8cad50890e1fa0dec0ded36f41d4720d072 100644
--- a/chrome/browser/devtools/devtools_ui_bindings.cc
+++ b/chrome/browser/devtools/devtools_ui_bindings.cc
@@ -300,11 +300,11 @@
  private:
   // contents::WebContentsObserver:
   void RenderProcessGone(base::TerminationStatus status) override;
-  void DidStartProvisionalLoadForFrame(
-      content::RenderFrameHost* render_frame_host,
-      const GURL& validated_url,
-      bool is_error_page,
-      bool is_iframe_srcdoc) override;
+  // TODO(creis): Replace with RenderFrameCreated when http://crbug.com/425397
+  // is fixed.  See also http://crbug.com/424641.
+  void AboutToNavigateRenderFrame(
+      content::RenderFrameHost* old_host,
+      content::RenderFrameHost* new_host) override;
   void DocumentOnLoadCompletedInMainFrame() override;
   void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
@@ -346,14 +346,12 @@
 }
 
 void DevToolsUIBindings::FrontendWebContentsObserver::
-    DidStartProvisionalLoadForFrame(content::RenderFrameHost* render_frame_host,
-                                    const GURL& validated_url,
-                                    bool is_error_page,
-                                    bool is_iframe_srcdoc) {
-  if (render_frame_host->GetParent())
+    AboutToNavigateRenderFrame(content::RenderFrameHost* old_host,
+                               content::RenderFrameHost* new_host) {
+  if (new_host->GetParent())
     return;
   devtools_bindings_->frontend_host_.reset(
-      content::DevToolsFrontendHost::Create(render_frame_host,
+      content::DevToolsFrontendHost::Create(new_host,
                                             devtools_bindings_));
 }