Mozart: Generalize frame scheduling.

services/gfx/compositor/renderer_impl.h

Index: services/gfx/compositor/renderer_impl.h
diff --git a/services/gfx/compositor/renderer_impl.h b/services/gfx/compositor/renderer_impl.h
index 2571c33e17ee544b66dfaaf34cf39bec8a11a6cc..bac5cf783af59848d3e9896dfe54d5b37b3c8c9f 100644
--- a/services/gfx/compositor/renderer_impl.h
+++ b/services/gfx/compositor/renderer_impl.h
@@ -18,6 +18,7 @@ namespace compositor {
 // Renderer interface implementation.
 // This object is owned by its associated RendererState.
 class RendererImpl : public mojo::gfx::composition::Renderer,
+                     public mojo::gfx::composition::FrameScheduler,
                      public mojo::gfx::composition::HitTester {
  public:
   RendererImpl(CompositorEngine* engine,
@@ -36,15 +37,22 @@ class RendererImpl : public mojo::gfx::composition::Renderer,
                     uint32 scene_version,
                     mojo::RectPtr viewport) override;
   void ClearRootScene() override;
+  void GetScheduler(
+      mojo::InterfaceRequest<mojo::gfx::composition::FrameScheduler>
+          scheduler_request) override;
   void GetHitTester(mojo::InterfaceRequest<mojo::gfx::composition::HitTester>
                         hit_tester_request) override;
 
+  // |FrameScheduler|:
+  void ScheduleFrame(const ScheduleFrameCallback& callback) override;
+
   // |HitTester|:
   void HitTest(mojo::PointFPtr point, const HitTestCallback& callback) override;
 
   CompositorEngine* const engine_;
   RendererState* const state_;
   mojo::Binding<mojo::gfx::composition::Renderer> renderer_binding_;
+  mojo::BindingSet<mojo::gfx::composition::FrameScheduler> scheduler_bindings_;
   mojo::BindingSet<mojo::gfx::composition::HitTester> hit_tester_bindings;
 
   DISALLOW_COPY_AND_ASSIGN(RendererImpl);