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

cc/output/direct_renderer.cc

Index: cc/output/direct_renderer.cc
diff --git a/cc/output/direct_renderer.cc b/cc/output/direct_renderer.cc
index 19c0e4ab7ed6e054300ae4ae83e7a62e014fcc85..8af1cbe119e66f383438838423f5c6f7ad5a4231 100644
--- a/cc/output/direct_renderer.cc
+++ b/cc/output/direct_renderer.cc
@@ -267,6 +267,7 @@ void DirectRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
   bool frame_has_alpha =
       current_frame()->root_render_pass->has_transparent_background;
   bool use_stencil = overdraw_feedback_;
+  bool was_reshaped = false;
   if (device_viewport_size != reshape_surface_size_ ||
       device_scale_factor != reshape_device_scale_factor_ ||
       root_render_pass->color_space != reshape_device_color_space_ ||
@@ -281,6 +282,7 @@ void DirectRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
     output_surface_->Reshape(
         reshape_surface_size_, reshape_device_scale_factor_,
         reshape_device_color_space_, reshape_has_alpha_, reshape_use_stencil_);
+    was_reshaped = true;

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

Would it be easier call something like
  overlay_processor_->OutputSurfaceWasReshaped()
here, instead of tracking the state?

   }
 
   BeginDrawingFrame();
@@ -315,7 +317,7 @@ void DirectRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
   // Attempt to replace some or all of the quads of the root render pass with
   // overlays.
   overlay_processor_->ProcessForOverlays(
-      resource_provider_, root_render_pass, render_pass_filters_,
+      resource_provider_, root_render_pass, was_reshaped, render_pass_filters_,
       render_pass_background_filters_, &current_frame()->overlay_list,
       &current_frame()->ca_layer_overlay_list,
       &current_frame()->dc_layer_overlay_list,