WIP BSP Tree for 3D Layer Sorting

cc/output/bsp_compare_result.h

Index: cc/output/bsp_compare_result.h
diff --git a/cc/output/bsp_compare_result.h b/cc/output/bsp_compare_result.h
new file mode 100644
index 0000000000000000000000000000000000000000..997e34b4f4bda7d44d9202d08c577435988cbda7
--- /dev/null
+++ b/cc/output/bsp_compare_result.h
@@ -0,0 +1,19 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+#ifndef CC_OUTPUT_BSP_COMPARE_RESULT_H_
+#define CC_OUTPUT_BSP_COMPARE_RESULT_H_
+
+namespace cc {
+
+enum BspCompareResult {
+  BSP_FRONT,
+  BSP_BACK,
+  BSP_SPLIT,
+  BSP_COPLANAR_FRONT,
+  BSP_COPLANAR_BACK
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_BSP_COMPARE_RESULT_H_