Remove unused RenderPassDrawQuad fields

cc/layers/render_surface_impl.cc

Index: cc/layers/render_surface_impl.cc
diff --git a/cc/layers/render_surface_impl.cc b/cc/layers/render_surface_impl.cc
index 04a4da49c13af8d526e4f0f4fd3dfe6cf426fd41..a17de97737eebfb62aabafade58e13c052db78db 100644
--- a/cc/layers/render_surface_impl.cc
+++ b/cc/layers/render_surface_impl.cc
@@ -66,10 +66,6 @@ void RenderSurfaceImpl::SetClipRect(const gfx::Rect& clip_rect) {
   clip_rect_ = clip_rect;
 }
 
-bool RenderSurfaceImpl::ContentsChanged() const {
-  return !damage_tracker_->current_damage_rect().IsEmpty();
-}
-
 void RenderSurfaceImpl::SetContentRect(const gfx::Rect& content_rect) {
   if (content_rect_ == content_rect)
     return;
@@ -221,8 +217,6 @@ void RenderSurfaceImpl::AppendQuads(
 
   ResourceProvider::ResourceId mask_resource_id =
       mask_layer ? mask_layer->ContentsResourceId() : 0;
-  gfx::Rect contents_changed_since_last_frame =
-      ContentsChanged() ? content_rect_ : gfx::Rect();
 
   RenderPassDrawQuad* quad =
       render_pass->CreateAndAppendDrawQuad<RenderPassDrawQuad>();
@@ -230,9 +224,7 @@ void RenderSurfaceImpl::AppendQuads(
                content_rect_,
                visible_content_rect,
                render_pass_id,
-               for_replica,
                mask_resource_id,
-               contents_changed_since_last_frame,
                mask_uv_rect,
                owning_layer_->filters(),
                owning_layer_->background_filters());