WIP: Surface Synchronization System

ui/aura/mus/window_mus.h

Index: ui/aura/mus/window_mus.h
diff --git a/ui/aura/mus/window_mus.h b/ui/aura/mus/window_mus.h
index 873ac31c1a53d73c252690fb65d71644a7623793..d1f9eb75ddf9dff3831e52419336b5e369ba1738 100644
--- a/ui/aura/mus/window_mus.h
+++ b/ui/aura/mus/window_mus.h
@@ -13,6 +13,7 @@
 #include "services/ui/public/interfaces/cursor.mojom.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/mus/mus_types.h"
+#include "ui/compositor/layer_type.h"
 
 namespace cc {
 class SurfaceInfo;
@@ -82,10 +83,13 @@ class AURA_EXPORT WindowMus {
   virtual void SetPredefinedCursorFromServer(ui::mojom::Cursor cursor) = 0;
   virtual void SetPropertyFromServer(const std::string& property_name,
                                      const std::vector<uint8_t>* data) = 0;
+  virtual void SetPrimarySurfaceInfo(const cc::SurfaceInfo& surface_info) = 0;
+  virtual void SetFallbackSurfaceInfo(const cc::SurfaceInfo& surface_info) = 0;
   virtual void SetFrameSinkIdFromServer(
       const cc::FrameSinkId& frame_sink_id) = 0;
-  virtual void SetSurfaceInfoFromServer(
-      const cc::SurfaceInfo& surface_info) = 0;
+  virtual const cc::LocalSurfaceId& GetLocalSurfaceId() = 0;
+  virtual const cc::LocalSurfaceId& AllocateLocalSurfaceIdForSize(
+      const gfx::Size& new_size) = 0;
   // The window was deleted on the server side. DestroyFromServer() should
   // result in deleting |this|.
   virtual void DestroyFromServer() = 0;