diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/utils/SkDebugTrace.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/utils/SkDebugTrace.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkUserTrace_DEFINED
+#define SkUserTrace_DEFINED
+
+/* Sample implementation of SkUserTrace that routes all of the
+   trace macros to debug output stream.
+   To use this, redefine SK_USER_TRACE_INCLUDE_FILE in
+   include/config/SkUserConfig.h to point to this file
+*/
+#define SK_TRACE_EVENT0(event) \
+  SkDebugf("Trace: %s\n", event)
+#define SK_TRACE_EVENT1(event, name1, value1) \
+  SkDebugf("Trace: %s (%s=%s)\n", event, name1, value1)
+#define SK_TRACE_EVENT2(event, name1, value1, name2, value2) \
+  SkDebugf("Trace: %s (%s=%s, %s=%s)\n", event, name1, value1, name2, value2)
+
+#endif