Enable hidpi favicons for favicons history does not know about

chrome/browser/favicon/favicon_handler_unittest.cc

Index: chrome/browser/favicon/favicon_handler_unittest.cc
diff --git a/chrome/browser/favicon/favicon_handler_unittest.cc b/chrome/browser/favicon/favicon_handler_unittest.cc
index 33e5c6c918d2141b870df7fb3161efeef3565fb5..f31c6cc9728659012005cab6ae4fea2f36f23c05 100644
--- a/chrome/browser/favicon/favicon_handler_unittest.cc
+++ b/chrome/browser/favicon/favicon_handler_unittest.cc
@@ -300,12 +300,15 @@ class TestFaviconHandler : public FaviconHandler {
     return download_id_;
   }
 
-  virtual void SetHistoryFavicon(const GURL& page_url,
-                                 const GURL& icon_url,
-                                 const std::vector<unsigned char>& bitmap_data,
-                                 history::IconType icon_type) OVERRIDE {
+  virtual void SetHistoryFavicons(const GURL& page_url,
+                                  const GURL& icon_url,
+                                  history::IconType icon_type,
+                                  const gfx::Image& image) OVERRIDE {
+    std::vector<unsigned char> bitmap_data;
+    if (!image.IsEmpty())
+      bitmap_data = *image.ToImagePNG();
     history_handler_.reset(new HistoryRequestHandler(
-        page_url, icon_url,icon_type, bitmap_data,
+        page_url, icon_url, icon_type, bitmap_data,
         FaviconService::FaviconResultsCallback()));
   }