Mac CoreAnimation compositor in the browser process

gpu/ipc/service/image_transport_surface_overlay_mac.mm

Index: gpu/ipc/service/image_transport_surface_overlay_mac.mm
diff --git a/gpu/ipc/service/image_transport_surface_overlay_mac.mm b/gpu/ipc/service/image_transport_surface_overlay_mac.mm
index 1ced5d09fe883c99e9e6531bd40af9c9056e4e24..1fc47617ec03bac4bae4dd806fb7db6d5e93318b 100644
--- a/gpu/ipc/service/image_transport_surface_overlay_mac.mm
+++ b/gpu/ipc/service/image_transport_surface_overlay_mac.mm
@@ -210,8 +210,10 @@ void IOSurfaceContextNoOp(scoped_refptr<ui::IOSurfaceContext>) {
   base::TimeTicks finish_time = base::TimeTicks::Now();
 
   bool fullscreen_low_power_layer_valid = false;
+/*
   ca_layer_tree_coordinator_->CommitPendingTreesToCA(
       pixel_damage_rect, &fullscreen_low_power_layer_valid);
+*/
   // TODO(ccameron): Plumb the fullscreen low power layer through to the
   // appropriate window.
 
@@ -228,6 +230,7 @@ void IOSurfaceContextNoOp(scoped_refptr<ui::IOSurfaceContext>) {
   CAContextID ca_context_id = 0;
   CAContextID fullscreen_low_power_ca_context_id = 0;
   gfx::ScopedRefCountedIOSurfaceMachPort io_surface_mach_port;
+/*
   if (use_remote_layer_api_) {
     ca_context_id = [ca_context_ contextId];
     fullscreen_low_power_ca_context_id =
@@ -238,6 +241,7 @@ void IOSurfaceContextNoOp(scoped_refptr<ui::IOSurfaceContext>) {
     if (io_surface)
       io_surface_mach_port.reset(IOSurfaceCreateMachPort(io_surface));
   }
+*/
   SendAcceleratedSurfaceBuffersSwapped(
       handle_, ca_context_id, fullscreen_low_power_layer_valid,
       fullscreen_low_power_ca_context_id, io_surface_mach_port, pixel_size_,
@@ -286,6 +290,7 @@ void IOSurfaceContextNoOp(scoped_refptr<ui::IOSurfaceContext>) {
     gl::GLImage* image,
     const gfx::Rect& pixel_frame_rect,
     const gfx::RectF& crop_rect) {
+  CHECK(0);
   if (transform != gfx::OVERLAY_TRANSFORM_NONE) {
     DLOG(ERROR) << "Invalid overlay plane transform.";
     return false;
@@ -310,6 +315,7 @@ void IOSurfaceContextNoOp(scoped_refptr<ui::IOSurfaceContext>) {
     const gfx::Transform& transform,
     int sorting_context_id,
     unsigned filter) {
+  CHECK(0);
   base::ScopedCFTypeRef<IOSurfaceRef> io_surface;
   base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer;
   if (contents_image) {