Re-enable ViewPropAnimRT

Change-Id: I2f30547c4e2212747c479760dff4f3f901d1eaf3
diff --git a/libs/hwui/Animator.h b/libs/hwui/Animator.h
index 203cdff..6cb72c4c 100644
--- a/libs/hwui/Animator.h
+++ b/libs/hwui/Animator.h
@@ -61,6 +61,8 @@
     bool isFinished() { return mPlayState == FINISHED; }
     float finalValue() { return mFinalValue; }
 
+    ANDROID_API virtual uint32_t dirtyMask() { return 0; }
+
 protected:
     BaseRenderNodeAnimator(float finalValue);
     virtual ~BaseRenderNodeAnimator();
@@ -112,6 +114,8 @@
 
     ANDROID_API virtual void onAttached(RenderNode* target);
 
+    ANDROID_API virtual uint32_t dirtyMask();
+
 protected:
     virtual float getValue(RenderNode* target) const;
     virtual void setValue(RenderNode* target, float value);