Convert remaining WebContentsObservers loading callbacks to use RFH.

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 3b81bcade129a0e0abced3677743393e880b4349..35a2956b8d79d985012884e7f374a9b2b6fe3b24 100644
--- a/chrome/browser/extensions/api/web_navigation/web_navigation_api.h
+++ b/chrome/browser/extensions/api/web_navigation/web_navigation_api.h
@@ -71,20 +71,13 @@ class WebNavigationTabObserver
       int error_code,
       const base::string16& error_description) OVERRIDE;
   virtual void DocumentLoadedInFrame(
-      int64 frame_num,
-      content::RenderViewHost* render_view_host) OVERRIDE;
-  virtual void DidFinishLoad(
-      int64 frame_num,
-      const GURL& validated_url,
-      bool is_main_frame,
-      content::RenderViewHost* render_view_host) OVERRIDE;
-  virtual void DidFailLoad(
-      int64 frame_num,
-      const GURL& validated_url,
-      bool is_main_frame,
-      int error_code,
-      const base::string16& error_description,
-      content::RenderViewHost* render_view_host) OVERRIDE;
+      content::RenderFrameHost* render_frame_host) OVERRIDE;
+  virtual void DidFinishLoad(content::RenderFrameHost* render_frame_host,
+                             const GURL& validated_url) OVERRIDE;
+  virtual void DidFailLoad(content::RenderFrameHost* render_frame_host,
+                           const GURL& validated_url,
+                           int error_code,
+                           const base::string16& error_description) OVERRIDE;
   virtual void DidGetRedirectForResourceRequest(
       content::RenderViewHost* render_view_host,
       const content::ResourceRedirectDetails& details) OVERRIDE;