Move frame_sink_id management to framesink_manager.cc/h from

cc/surfaces/display.h

Index: cc/surfaces/display.h
diff --git a/cc/surfaces/display.h b/cc/surfaces/display.h
index 35b504149b23362a8e2de6c3bcb64a600469c04f..e86398d5641166488153d2fb7af4e9667e9901ef 100644
--- a/cc/surfaces/display.h
+++ b/cc/surfaces/display.h
@@ -14,6 +14,7 @@
 #include "cc/scheduler/begin_frame_source.h"
 #include "cc/surfaces/display_scheduler.h"
 #include "cc/surfaces/frame_sink_id.h"
+#include "cc/surfaces/framesink_manager.h"
 #include "cc/surfaces/surface_aggregator.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_manager.h"
@@ -63,7 +64,8 @@ class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
 
   ~Display() override;
 
-  void Initialize(DisplayClient* client, SurfaceManager* surface_manager);
+  void Initialize(DisplayClient* client, SurfaceManager* surface_manager,
+                                         FrameSinkManager* framesink_manager);
 
   // device_scale_factor is used to communicate to the external window system
   // what scale this was rendered at.
@@ -104,6 +106,7 @@ class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
 
   DisplayClient* client_ = nullptr;
   SurfaceManager* surface_manager_ = nullptr;
+  FrameSinkManager* framesink_manager_ = nullptr;
   const FrameSinkId frame_sink_id_;
   SurfaceId current_surface_id_;
   gfx::Size current_surface_size_;