Invert DSF to map from delegated frame to layer space

cc/layers/delegated_renderer_layer.cc

Index: cc/layers/delegated_renderer_layer.cc
diff --git a/cc/layers/delegated_renderer_layer.cc b/cc/layers/delegated_renderer_layer.cc
index 194455ac268a80805deea4a0798f7d5edb111454..c47206172ceedcd205e21525f3d11d3778700d3c 100644
--- a/cc/layers/delegated_renderer_layer.cc
+++ b/cc/layers/delegated_renderer_layer.cc
@@ -67,8 +67,6 @@ void DelegatedRendererLayer::PushPropertiesTo(LayerImpl* impl) {
   DelegatedRendererLayerImpl* delegated_impl =
       static_cast<DelegatedRendererLayerImpl*>(impl);
 
-  delegated_impl->SetDisplaySize(display_size_);
-
   delegated_impl->CreateChildIdIfNeeded(
       frame_provider_->GetReturnResourcesCallbackForImplThread());
 
@@ -86,13 +84,6 @@ void DelegatedRendererLayer::ProviderHasNewFrame() {
   SetNextCommitWaitsForActivation();
 }
 
-void DelegatedRendererLayer::SetDisplaySize(const gfx::Size& size) {
-  if (display_size_ == size)
-    return;
-  display_size_ = size;
-  SetNeedsCommit();
-}
-
 bool DelegatedRendererLayer::Update(ResourceUpdateQueue* queue,
                                     const OcclusionTracker<Layer>* occlusion) {
   bool updated = Layer::Update(queue, occlusion);