Compositor bindings for mojo html_viewer

mojo/cc/output_surface_mojo.cc

Index: mojo/cc/output_surface_mojo.cc
diff --git a/mojo/cc/output_surface_mojo.cc b/mojo/cc/output_surface_mojo.cc
index 05c6a84a922cbf610c00e149017c18ffbcf241d7..37a4eb0aada833cb0c22775dc1464ce1aa54626a 100644
--- a/mojo/cc/output_surface_mojo.cc
+++ b/mojo/cc/output_surface_mojo.cc
@@ -12,13 +12,17 @@
 namespace mojo {
 
 OutputSurfaceMojo::OutputSurfaceMojo(
+    OutputSurfaceMojoClient* client,
     const scoped_refptr<cc::ContextProvider>& context_provider,
     SurfacePtr surface,
     uint32_t id_namespace)
     : cc::OutputSurface(context_provider),
+      output_surface_mojo_client_(client),
       surface_(surface.Pass()),
       id_allocator_(id_namespace) {
   surface_.set_client(this);
+  capabilities_.delegated_rendering = true;
+  capabilities_.max_frames_pending = 1;
 }
 
 OutputSurfaceMojo::~OutputSurfaceMojo() {
@@ -37,6 +41,7 @@ void OutputSurfaceMojo::SwapBuffers(cc::CompositorFrame* frame) {
     surface_id_ = id_allocator_.GenerateId();
     surface_->CreateSurface(SurfaceId::From(surface_id_),
                             Size::From(frame_size));
+    output_surface_mojo_client_->DidCreateSurface(surface_id_);
     surface_size_ = frame_size;
   }