Add support for multiple icon sizes for Mac platform apps

chrome/browser/ui/views/aura/app_list/extension_app_item.cc

Index: chrome/browser/ui/views/aura/app_list/extension_app_item.cc
diff --git a/chrome/browser/ui/views/aura/app_list/extension_app_item.cc b/chrome/browser/ui/views/aura/app_list/extension_app_item.cc
index a93ad1bd78375652d69d25bd4d2186a488849f93..53eec3ec5b4f814c4ce4f27b5a67c1bc00ab3a5e 100644
--- a/chrome/browser/ui/views/aura/app_list/extension_app_item.cc
+++ b/chrome/browser/ui/views/aura/app_list/extension_app_item.cc
@@ -137,11 +137,11 @@ void ExtensionAppItem::LoadDefaultImage() {
   SetIcon(*rb.GetImageNamed(resource).ToSkBitmap());
 }
 
-void ExtensionAppItem::OnImageLoaded(SkBitmap* image,
-                                     const ExtensionResource& resource,
+void ExtensionAppItem::OnImageLoaded(const gfx::Image* image,
+                                     const std::string& extension_id,
                                      int tracker_index) {
-  if (image && !image->empty())
-    SetIcon(*image);
+  if (image && !image->IsEmpty())
+    SetIcon(*image->ToSkBitmap());
   else
     LoadDefaultImage();
 }