Make favicons for about:history and about:bookmarks switch from lodpi to hidpi when dragging browser

chrome/browser/ui/webui/session_favicon_source.h

Index: chrome/browser/ui/webui/session_favicon_source.h
diff --git a/chrome/browser/ui/webui/session_favicon_source.h b/chrome/browser/ui/webui/session_favicon_source.h
index 79036f953654e582a488f892ab20d24353baf818..db9175b5bd416ab724e1466a833554b50524049f 100644
--- a/chrome/browser/ui/webui/session_favicon_source.h
+++ b/chrome/browser/ui/webui/session_favicon_source.h
@@ -18,16 +18,13 @@ class SessionFaviconSource : public FaviconSource {
  public:
   explicit SessionFaviconSource(Profile* profile);
 
-  // FaviconSource implementation.
-  virtual void StartDataRequest(const std::string& path,
-                                bool is_incognito,
-                                int request_id) OVERRIDE;
   virtual std::string GetMimeType(const std::string&) const OVERRIDE;
   virtual bool ShouldReplaceExistingSource() const OVERRIDE;
   virtual bool AllowCaching() const OVERRIDE;
 
  protected:
   virtual ~SessionFaviconSource();
+  virtual bool HandleMissingResource(const IconRequest& request) OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SESSION_FAVICON_SOURCE_H_