Add TimeToScrollUpdateSwapBegin2 in RAPPOR

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index 19a14dd53f50f3be95ac97825992336df9fe3ecc..426888f342c1c5678279ead6c7496360625332fe 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -60,6 +60,10 @@ class Rect;
 class Size;
 }
 
+namespace rappor {
+class RapporService;
+}
+
 namespace net {
 class X509Certificate;
 }
@@ -535,6 +539,8 @@ class CONTENT_EXPORT WebContentsDelegate {
   // Requests the app banner. This method is called from the DevTools.
   virtual void RequestAppBannerFromDevTools(content::WebContents* web_contents);
 
+  virtual ::rappor::RapporService* getRapporService();
+
  protected:
   virtual ~WebContentsDelegate();