Add new runtime debug flags.

Change-Id: I07955de166a89b5053c6c13f250bb3e2936ca86e
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 19a5973..540f115 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -163,6 +163,10 @@
 #endif
 #if DEBUG_MEMORY_USAGE
     mCaches.dumpMemoryUsage();
+#else
+    if (mCaches.getDebugLevel() & kDebugMemory) {
+        mCaches.dumpMemoryUsage();
+    }
 #endif
 }