Add contains point method to Region

Change-Id: I553433ff7ac39f14ffca8278960d2abc95b4dd63
diff --git a/include/ui/Region.h b/include/ui/Region.h
index d906dbb..0d1c68c 100644
--- a/include/ui/Region.h
+++ b/include/ui/Region.h
@@ -50,6 +50,9 @@
     inline  Rect        getBounds() const   { return mStorage[mStorage.size() - 1]; }
     inline  Rect        bounds() const      { return getBounds(); }
 
+            bool        contains(const Point& point) const;
+            bool        contains(int x, int y) const;
+
             // the region becomes its bounds
             Region&     makeBoundsSelf();