SF: Add support for screen captures

Add Layer::drawNow to support capturing portions
of the screen in the FE, as this is not tied
to vsync

Test: Compile/Run manually
Merged-Id: I0781d44240ae127a6e70b35282a02cbedfe36fe4
Change-Id: I0781d44240ae127a6e70b35282a02cbedfe36fe4
diff --git a/services/surfaceflinger/LayerBE.h b/services/surfaceflinger/LayerBE.h
index 981f756..854cdd6 100644
--- a/services/surfaceflinger/LayerBE.h
+++ b/services/surfaceflinger/LayerBE.h
@@ -87,9 +87,11 @@
         bool clearArea = false;
         bool preMultipliedAlpha = false;
         bool opaque = false;
+        bool disableTexture = false;
         half4 color;
         Texture texture;
         bool useIdentityTransform = false;
+        bool Y410BT2020 = false;
     } re;
 
     void dump(const char* tag) const;