Clip projected ripples to outlines

bug:27343928

Also fixes positioning of ripples to a scrolled projection receiver.

Change-Id: I74b7233c46d7c15839ca8bf50e188ba6646d7432
diff --git a/libs/hwui/Snapshot.h b/libs/hwui/Snapshot.h
index b03643f..3a01d04 100644
--- a/libs/hwui/Snapshot.h
+++ b/libs/hwui/Snapshot.h
@@ -63,6 +63,7 @@
     float radius;
 };
 
+// TODO: remove for HWUI_NEW_OPS
 class ProjectionPathMask {
 public:
     static void* operator new(size_t size) = delete;
@@ -219,6 +220,7 @@
      * Fills outTransform with the current, total transform to screen space,
      * across layer boundaries.
      */
+    // TODO: remove for HWUI_NEW_OPS
     void buildScreenSpaceTransform(Matrix4* outTransform) const;
 
     /**
@@ -294,9 +296,13 @@
     const RoundRectClipState* roundRectClipState;
 
     /**
-     * Current projection masking path - used exclusively to mask tessellated circles.
+     * Current projection masking path - used exclusively to mask projected, tessellated circles.
      */
+#if HWUI_NEW_OPS
+    const SkPath* projectionPathMask;
+#else
     const ProjectionPathMask* projectionPathMask;
+#endif
 
     void dump() const;