<webview>: Partially migrate loadcommit event from content to chrome

chrome/browser/webview/webview_guest.h

Index: chrome/browser/webview/webview_guest.h
diff --git a/chrome/browser/webview/webview_guest.h b/chrome/browser/webview/webview_guest.h
index cefc7b335a496ac5708a65bdec7daaf3abd142d1..33ee2c15cf62c92d32886657f43e1e8e9896404d 100644
--- a/chrome/browser/webview/webview_guest.h
+++ b/chrome/browser/webview/webview_guest.h
@@ -48,6 +48,16 @@ class WebViewGuest : public content::WebContentsObserver {
 
  private:
   virtual ~WebViewGuest();
+
+  void DispatchEvent(const std::string& event_name,
+                     scoped_ptr<DictionaryValue> event);
+
+  virtual void DidCommitProvisionalLoadForFrame(
+      int64 frame_id,
+      bool is_main_frame,
+      const GURL& url,
+      content::PageTransition transition_type,
+      content::RenderViewHost* render_view_host) OVERRIDE;
   virtual void WebContentsDestroyed(
       content::WebContents* web_contents) OVERRIDE;