Initial surface aggregator implementation

cc/surfaces/surface.cc

Index: cc/surfaces/surface.cc
diff --git a/cc/surfaces/surface.cc b/cc/surfaces/surface.cc
index 12f360a9a475c0a6388e9fb0469229907fbabe3a..82a13222f261376c45378c859f3f3c2a879fa57a 100644
--- a/cc/surfaces/surface.cc
+++ b/cc/surfaces/surface.cc
@@ -4,6 +4,7 @@
 
 #include "cc/surfaces/surface.h"
 
+#include "cc/output/compositor_frame.h"
 #include "cc/surfaces/surface_manager.h"
 
 namespace cc {
@@ -21,4 +22,10 @@ Surface::~Surface() {
   manager_->DeregisterSurface(surface_id_);
 }
 
+void Surface::QueueFrame(scoped_ptr<CompositorFrame> frame) {
+  current_frame_ = frame.Pass();
+}
+
+CompositorFrame* Surface::GetEligibleFrame() { return current_frame_.get(); }
+
 }  // namespace cc