Cleanup various clang warnings, use unique_ptrs in several places

Change-Id: I347904b25e51fcc7de14b1e72f1acd0f6ba26f3f
diff --git a/libs/hwui/DisplayList.h b/libs/hwui/DisplayList.h
index 26637a7..cfd60ad 100644
--- a/libs/hwui/DisplayList.h
+++ b/libs/hwui/DisplayList.h
@@ -137,10 +137,10 @@
     Vector<const SkBitmap*> ownedBitmapResources;
     Vector<const Res_png_9patch*> patchResources;
 
-    Vector<const SkPaint*> paints;
-    Vector<const SkPath*> paths;
+    std::vector<std::unique_ptr<const SkPaint>> paints;
+    std::vector<std::unique_ptr<const SkRegion>> regions;
+    std::vector<std::unique_ptr<const SkPath>> paths;
     SortedVector<const SkPath*> sourcePaths;
-    Vector<const SkRegion*> regions;
     Vector<Functor*> functors;
 
     const Vector<Chunk>& getChunks() const {