reformat Rect.{cpp|h}

Change-Id: I45b1f6646541a1abacce1e70df00a770e47b820e
diff --git a/libs/ui/Region.cpp b/libs/ui/Region.cpp
index bf01488..623f8ed 100644
--- a/libs/ui/Region.cpp
+++ b/libs/ui/Region.cpp
@@ -697,7 +697,7 @@
         size_t count = reg.mStorage.size();
         Rect* rects = reg.mStorage.editArray();
         while (count) {
-            rects->translate(dx, dy);
+            rects->offsetBy(dx, dy);
             rects++;
             count--;
         }