Make us save favicon in incognito mode if the url is bookmarked. This

chrome/browser/fav_icon_helper.h

Index: chrome/browser/fav_icon_helper.h
diff --git a/chrome/browser/fav_icon_helper.h b/chrome/browser/fav_icon_helper.h
index 8eb7f171cd2d608ec5dad8eb14d405a3b3359e77..a64eba200327009ca2a95c8a2f1861eafe699feb 100644
--- a/chrome/browser/fav_icon_helper.h
+++ b/chrome/browser/fav_icon_helper.h
@@ -156,6 +156,9 @@ class FavIconHelper : public RenderViewHostDelegate::FavIcon {
   // wide. Does nothing if the image is empty.
   SkBitmap ConvertToFavIconSize(const SkBitmap& image);
 
+  // Returns true if the favicon should be saved.
+  bool ShouldSaveFavicon(const GURL& url);
+
   // Hosting TabContents. We callback into this when done.
   TabContents* tab_contents_;