Display Compositor: Allocate LocalFrameId in client.

services/ui/ws/frame_generator.h

Index: services/ui/ws/frame_generator.h
diff --git a/services/ui/ws/frame_generator.h b/services/ui/ws/frame_generator.h
index ef3e5028dd2badceb18abc18d53049747e2caecc..5546720fe8d79fdb4030f535a345e6092b539c5f 100644
--- a/services/ui/ws/frame_generator.h
+++ b/services/ui/ws/frame_generator.h
@@ -12,6 +12,7 @@
 #include "base/timer/timer.h"
 #include "cc/surfaces/frame_sink_id.h"
 #include "cc/surfaces/surface_id.h"
+#include "cc/surfaces/surface_id_allocator.h"
 #include "services/ui/public/interfaces/window_tree_constants.mojom.h"
 #include "services/ui/ws/ids.h"
 #include "services/ui/ws/server_window_tracker.h"
@@ -121,6 +122,9 @@ class FrameGenerator : public ServerWindowTracker,
   ServerWindow* const root_window_;
   scoped_refptr<gpu::GpuChannelHost> gpu_channel_;
 
+  gfx::Size last_submitted_frame_size_;
+  cc::LocalFrameId local_frame_id_;
+  cc::SurfaceIdAllocator id_allocator_;
   cc::mojom::MojoCompositorFrameSinkPtr compositor_frame_sink_;
   gfx::AcceleratedWidget widget_ = gfx::kNullAcceleratedWidget;