Add Color Layer to ASurfaceControl

Bug:122326454
Test: atest CtsViewTestCases:android.view.cts.ASurfaceControlTests
Change-Id: Ib05ad70d838c79aa6f2e309217b93906c950b6fa
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 95a8630..0f83464 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -202,6 +202,8 @@
         mat4 colorTransform;
         bool hasColorTransform;
 
+        ui::Dataspace colorDataspace; // The dataspace of the background color layer
+
         // The deque of callback handles for this frame. The back of the deque contains the most
         // recent callback handle.
         std::deque<sp<CallbackHandle>> callbackHandles;
@@ -308,6 +310,8 @@
             const std::vector<sp<CallbackHandle>>& /*handles*/) {
         return false;
     };
+    virtual bool setColorAlpha(float /*alpha*/) { return false; };
+    virtual bool setColorDataspace(ui::Dataspace /*dataspace*/) { return false; };
 
     ui::Dataspace getDataSpace() const { return mCurrentDataSpace; }