arc: Support non-standard display scale factors.

chrome/browser/ui/app_list/arc/arc_app_icon.h

Index: chrome/browser/ui/app_list/arc/arc_app_icon.h
diff --git a/chrome/browser/ui/app_list/arc/arc_app_icon.h b/chrome/browser/ui/app_list/arc/arc_app_icon.h
index 473257cdbf5b3dfe6264026445e2bf2ff4957423..54516049ba2b63c5a597a7d051019247eb7f2ca7 100644
--- a/chrome/browser/ui/app_list/arc/arc_app_icon.h
+++ b/chrome/browser/ui/app_list/arc/arc_app_icon.h
@@ -90,7 +90,7 @@ class ArcAppIcon {
       const base::FilePath& path,
       const base::FilePath& default_app_path);
   void OnIconRead(std::unique_ptr<ArcAppIcon::ReadResult> read_result);
-  void Update(const gfx::ImageSkia* image);
+  void Update(ui::ScaleFactor scale_factor, const SkBitmap& bitmap);
   void DiscardDecodeRequest(DecodeRequest* request);
 
   content::BrowserContext* context_;