Force refresh of shelf area when gesture completes to prevent

ash/shelf/shelf_widget.h

Index: ash/shelf/shelf_widget.h
diff --git a/ash/shelf/shelf_widget.h b/ash/shelf/shelf_widget.h
index 62856648eca99d842ce1ed3d9b8425d60f04ac08..e7cbcf129bf5d127fce54a3da5f0f755f0ef9ec4 100644
--- a/ash/shelf/shelf_widget.h
+++ b/ash/shelf/shelf_widget.h
@@ -91,6 +91,10 @@ class ASH_EXPORT ShelfWidget : public views::Widget,
   // no dimmer active, the function will return -1.
   int GetDimmingAlphaForTest();
 
+  // A function to test the bounds of the dimming bar. Returns gfx::Rect() if
+  // the dimmer is inactive.
+  gfx::Rect GetDimmerBoundsForTest();
+
   // Disable dimming animations for running tests.
   void DisableDimmingAnimationsForTest();