cc: Fork OverlayCandidate to CALayerOverlay

cc/test/fake_output_surface.h

Index: cc/test/fake_output_surface.h
diff --git a/cc/test/fake_output_surface.h b/cc/test/fake_output_surface.h
index 7819848a8148c47e575608dbf3542a0f33277bee..34274d85d073e329b0b9f6eb339a233d1ff5be4f 100644
--- a/cc/test/fake_output_surface.h
+++ b/cc/test/fake_output_surface.h
@@ -117,6 +117,11 @@ class FakeOutputSurface : public OutputSurface {
 
   bool SurfaceIsSuspendForRecycle() const override;
 
+  OverlayCandidateValidator* GetOverlayCandidateValidator() const override;
+  void SetOverlayCandidateValidator(OverlayCandidateValidator* validator) {
+    overlay_candidate_validator_ = validator;
+  }
+
   void set_has_external_stencil_test(bool has_test) {
     has_external_stencil_test_ = has_test;
   }
@@ -157,6 +162,7 @@ class FakeOutputSurface : public OutputSurface {
   unsigned framebuffer_;
   TransferableResourceArray resources_held_by_parent_;
   scoped_ptr<ManagedMemoryPolicy> memory_policy_to_set_at_bind_;
+  OverlayCandidateValidator* overlay_candidate_validator_;
   gfx::Rect last_swap_rect_;
 };