Protected surface API

To be used by DRM framework, implemented by display HAL

Change-Id: I054a07a94f4d5dbe792f3a597e2e49a100d90eb2
diff --git a/include/surfaceflinger/ISurfaceComposer.h b/include/surfaceflinger/ISurfaceComposer.h
index 56ed3a4..361e7dc 100644
--- a/include/surfaceflinger/ISurfaceComposer.h
+++ b/include/surfaceflinger/ISurfaceComposer.h
@@ -44,6 +44,8 @@
         eSecure             = 0x00000080,
         eNonPremultiplied   = 0x00000100,
         eOpaque             = 0x00000400,
+        eProtectedByApp     = 0x00000800,
+        eProtectedByDRM     = 0x00001000,
 
         eFXSurfaceNormal    = 0x00000000,
         eFXSurfaceBlur      = 0x00010000,