cc: Implement overdraw feedback debugging feature.

ui/compositor/test/in_process_context_factory.cc

Index: ui/compositor/test/in_process_context_factory.cc
diff --git a/ui/compositor/test/in_process_context_factory.cc b/ui/compositor/test/in_process_context_factory.cc
index 2dfc4f6e6c45c034189866bb79dafb653e2cb3d4..cdb7b52650325e61c55b671eba5a7a94fd51df58 100644
--- a/ui/compositor/test/in_process_context_factory.cc
+++ b/ui/compositor/test/in_process_context_factory.cc
@@ -70,7 +70,8 @@ class DirectOutputSurface : public cc::OutputSurface {
   void Reshape(const gfx::Size& size,
                float device_scale_factor,
                const gfx::ColorSpace& color_space,
-               bool has_alpha) override {
+               bool has_alpha,
+               bool use_stencil) override {
     context_provider()->ContextGL()->ResizeCHROMIUM(
         size.width(), size.height(), device_scale_factor, has_alpha);
   }