<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 ff68d608a43fa9bbcca334fb6648d54379f9d80a..086730185f33fc43f0b0c16c8bc67333ae3f0049 100644
--- a/chrome/browser/webview/webview_guest.h
+++ b/chrome/browser/webview/webview_guest.h
@@ -31,6 +31,9 @@ class WebViewGuest : public content::WebContentsObserver {
 
   static WebViewGuest* From(int embedder_process_id, int instance_id);
 
+  void DispatchEvent(const std::string& event_name,
+                     scoped_ptr<DictionaryValue> event);
+
   content::WebContents* embedder_web_contents() const {
     return embedder_web_contents_;
   }
@@ -47,6 +50,13 @@ class WebViewGuest : public content::WebContentsObserver {
 
  private:
   virtual ~WebViewGuest();
+
+  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;