In test code, allow any 100% data pack to provide fallbacks.

ui/base/resource/resource_bundle.h

Index: ui/base/resource/resource_bundle.h
diff --git a/ui/base/resource/resource_bundle.h b/ui/base/resource/resource_bundle.h
index 7170a1c51c6afdd3a8b43824cf936cb33b295733..cce0d8dbed02a4e4aaab0f9c049e31a34420745b 100644
--- a/ui/base/resource/resource_bundle.h
+++ b/ui/base/resource/resource_bundle.h
@@ -355,7 +355,7 @@ class UI_BASE_EXPORT ResourceBundle {
   // Fills the |bitmap| given the |resource_id| and |scale_factor|.
   // Returns false if the resource does not exist. This may fall back to
   // the data pack with SCALE_FACTOR_NONE, and when this happens,
-  // |scale_factor| will be set to SCALE_FACTOR_100P.
+  // |scale_factor| will be set to SCALE_FACTOR_NONE.

[oshima, 2016/10/24 18:07:09]

Thank you for catching this. Looks like I forgot to update this when impl has
changed.

   bool LoadBitmap(int resource_id,
                   ScaleFactor* scale_factor,
                   SkBitmap* bitmap,