Restore SkPath(const SkPath&) to copy the generation ID on Android.

include/core/SkPath.h

Index: include/core/SkPath.h
diff --git a/include/core/SkPath.h b/include/core/SkPath.h
index d4b79cda0443cd73417dde72e9d3a6f786737e01..626b1cc5d7611d0a62c11c993c15d19b325be059 100644
--- a/include/core/SkPath.h
+++ b/include/core/SkPath.h
@@ -167,14 +167,12 @@ public:
 
     /** Clear any lines and curves from the path, making it empty. This frees up
         internal storage associated with those segments.
-        This does NOT change the fill-type setting nor isConvex
     */
     void reset();
 
     /** Similar to reset(), in that all lines and curves are removed from the
         path. However, any internal storage for those lines/curves is retained,
         making reuse of the path potentially faster.
-        This does NOT change the fill-type setting nor isConvex
     */
     void rewind();