Make Surface creation lazy for OffscreenCanvasFrameReceiverImpl

content/browser/renderer_host/offscreen_canvas_surface_impl.cc

Index: content/browser/renderer_host/offscreen_canvas_surface_impl.cc
diff --git a/content/browser/renderer_host/offscreen_canvas_surface_impl.cc b/content/browser/renderer_host/offscreen_canvas_surface_impl.cc
index a3ed311c56208e9f6d41b047c5e5050c91db9f16..dd9c023931b3359b9b16cd51b1c7afca1f495106 100644
--- a/content/browser/renderer_host/offscreen_canvas_surface_impl.cc
+++ b/content/browser/renderer_host/offscreen_canvas_surface_impl.cc
@@ -23,19 +23,9 @@ OffscreenCanvasSurfaceImpl::OffscreenCanvasSurfaceImpl(
     mojo::InterfaceRequest<blink::mojom::OffscreenCanvasSurface> request)
     : id_allocator_(new cc::SurfaceIdAllocator(AllocateSurfaceClientId())),
       binding_(this, std::move(request)) {
-  GetSurfaceManager()->RegisterSurfaceClientId(id_allocator_->client_id());
 }
 
 OffscreenCanvasSurfaceImpl::~OffscreenCanvasSurfaceImpl() {
-  if (!GetSurfaceManager()) {
-    // Inform both members that SurfaceManager's no longer alive to
-    // avoid their destruction errors.
-    if (surface_factory_)
-        surface_factory_->DidDestroySurfaceManager();
-  } else {
-    GetSurfaceManager()->InvalidateSurfaceClientId(id_allocator_->client_id());
-  }
-  surface_factory_->Destroy(surface_id_);
 }
 
 void OffscreenCanvasSurfaceImpl::GetSurfaceId(
@@ -47,15 +37,6 @@ void OffscreenCanvasSurfaceImpl::GetSurfaceId(
   callback.Run(surface_id_);
 }
 
-void OffscreenCanvasSurfaceImpl::RequestSurfaceCreation(
-    const cc::SurfaceId& surface_id) {
-  cc::SurfaceManager* manager = GetSurfaceManager();
-  if (!surface_factory_) {
-    surface_factory_ = base::MakeUnique<cc::SurfaceFactory>(manager, this);
-  }
-  surface_factory_->Create(surface_id);
-}
-
 void OffscreenCanvasSurfaceImpl::Require(const cc::SurfaceId& surface_id,
                                          const cc::SurfaceSequence& sequence) {
   cc::SurfaceManager* manager = GetSurfaceManager();
@@ -74,16 +55,4 @@ void OffscreenCanvasSurfaceImpl::Satisfy(const cc::SurfaceSequence& sequence) {
   manager->DidSatisfySequences(sequence.client_id, &sequences);
 }
 
-// TODO(619136): Implement cc::SurfaceFactoryClient functions for resources
-// return.
-void OffscreenCanvasSurfaceImpl::ReturnResources(
-    const cc::ReturnedResourceArray& resources) {}
-
-void OffscreenCanvasSurfaceImpl::WillDrawSurface(const cc::SurfaceId& id,
-                                                 const gfx::Rect& damage_rect) {
-}
-
-void OffscreenCanvasSurfaceImpl::SetBeginFrameSource(
-    cc::BeginFrameSource* begin_frame_source) {}
-
 }  // namespace content