3d view system!

True 3d transformations are now supported by DisplayLists and the
renderer, initially with the translationZ property on view.

Renderer operations used directly by DisplayList (formerly,
clip/save/restore/saveLayer) are now more simply managed by allocating
them temporarily on the handler's allocator, which exists for a single
frame. This is much simpler than continuing to expand the pool of
pre-allocated DisplayListOps now that more operations are called
directly by DisplayList, especially with z ordered drawing.

Still TODO:
-APIs for camera positioning, shadows
-Make Z apis public, and expose through XML
-Make invalidation / input 3d aware

Change-Id: I95fe6fa03f9b6ddd34a7e0c6ec8dd9fe47c6c6eb
diff --git a/libs/hwui/Vector.h b/libs/hwui/Vector.h
index 497924e..5110272 100644
--- a/libs/hwui/Vector.h
+++ b/libs/hwui/Vector.h
@@ -107,6 +107,21 @@
     }
 }; // class Vector2
 
+class Vector3 {
+public:
+    float x;
+    float y;
+    float z;
+
+    Vector3() :
+        x(0.0f), y(0.0f), z(0.0f) {
+    }
+
+    Vector3(float px, float py, float pz) :
+        x(px), y(py), z(pz) {
+    }
+};
+
 ///////////////////////////////////////////////////////////////////////////////
 // Types
 ///////////////////////////////////////////////////////////////////////////////