Expose display list APIs

The exposed APIs are slightly simpler than the full APIs used internally.
Only APIs useful to applications are exposed.

Change-Id: Ie03014628d40ad5ef63dedbc52ce3def84429d54
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index d11558f..e5fd7b9 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -280,7 +280,7 @@
 void OpenGLRenderer::startTiling(const Rect& clip, int windowHeight, bool opaque) {
     if (!mSuppressTiling) {
         mCaches.startTiling(clip.left, windowHeight - clip.bottom,
-                    clip.right - clip.left, clip.bottom - clip.top, opaque);
+                clip.right - clip.left, clip.bottom - clip.top, opaque);
     }
 }