Support nested display lists.

Change-Id: I3815a2832fc0f722c668ba8f51c5f177edb77c94
diff --git a/libs/hwui/OpenGLDebugRenderer.cpp b/libs/hwui/OpenGLDebugRenderer.cpp
index fe75ca2..1cf3d20 100644
--- a/libs/hwui/OpenGLDebugRenderer.cpp
+++ b/libs/hwui/OpenGLDebugRenderer.cpp
@@ -48,6 +48,12 @@
     return OpenGLRenderer::saveLayer(left, top, right, bottom, p, flags);
 }
 
+void OpenGLDebugRenderer::drawDisplayList(DisplayList* displayList) {
+    mPrimitivesCount++;
+    StopWatch w("drawDisplayList");
+    OpenGLRenderer::drawDisplayList(displayList);
+}
+
 void OpenGLDebugRenderer::drawBitmap(SkBitmap* bitmap, float left, float top,
         SkPaint* paint) {
     mPrimitivesCount++;