Only delete old frames when a new main frame navigation commits

chrome/browser/extensions/api/web_navigation/web_navigation_api.h

Index: chrome/browser/extensions/api/web_navigation/web_navigation_api.h
diff --git a/chrome/browser/extensions/api/web_navigation/web_navigation_api.h b/chrome/browser/extensions/api/web_navigation/web_navigation_api.h
index f88eeb19c914f049ebecd89f3cc9f7f69b5917df..b73b7189444621e1d9d237f8ff2ea62a0ff0d3bd 100644
--- a/chrome/browser/extensions/api/web_navigation/web_navigation_api.h
+++ b/chrome/browser/extensions/api/web_navigation/web_navigation_api.h
@@ -40,6 +40,8 @@ class WebNavigationTabObserver : public content::NotificationObserver,
     return navigation_state_;
   }
 
+  content::RenderViewHost* GetRenderViewHostInProcess(int process_id) const;
+
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ -97,6 +99,12 @@ class WebNavigationTabObserver : public content::NotificationObserver,
   bool IsReferenceFragmentNavigation(FrameNavigationState::FrameID frame_id,
                                      const GURL& url);
 
+  // Creates and sends onErrorOccurred events for all on-going navigations. If
+  // |render_view_host| is non-NULL, only generates events for frames in this
+  // render view host.
+  void SendErrorEvents(content::WebContents* web_contents,
+                       content::RenderViewHost* render_view_host);
+
   // Tracks the state of the frames we are sending events for.
   FrameNavigationState navigation_state_;