Move BakedOpDispatcher to separate file

Change-Id: If7aad6db6b7e54a33eac9b9eddbe8cd844207282
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index c3cfc94..d36ce99 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -28,6 +28,7 @@
 #include "renderthread/RenderThread.h"
 
 #if HWUI_NEW_OPS
+#include "BakedOpDispatcher.h"
 #include "BakedOpRenderer.h"
 #endif