Always set damage rect to output rect if 3D context was reshaped.

cc/output/dc_layer_overlay.h

Index: cc/output/dc_layer_overlay.h
diff --git a/cc/output/dc_layer_overlay.h b/cc/output/dc_layer_overlay.h
index 5ae861a22d85804fccc5d30b628e4feef893a06e..0b4660e3f85003ac8426ee6bce5a9be7a229a9a3 100644
--- a/cc/output/dc_layer_overlay.h
+++ b/cc/output/dc_layer_overlay.h
@@ -75,6 +75,7 @@ class DCLayerOverlayProcessor {
   };
 
   void Process(ResourceProvider* resource_provider,
+               bool was_reshaped,
                const gfx::RectF& display_rect,
                QuadList* quad_list,
                gfx::Rect* overlay_damage_rect,
@@ -94,7 +95,6 @@ class DCLayerOverlayProcessor {
 

[ccameron, 2017/05/11 08:49:17]

It may be preferable to use OverlayProcessor::previous_frame_underlay_rect_
directly (by pointer, like |overlay_damage_rect|) here.

   gfx::Rect previous_frame_underlay_rect_;
   gfx::Rect previous_occlusion_bounding_box_;
-  gfx::RectF previous_display_rect_;
 };
 
 }  // namespace cc