diff -r 000000000000 -r 6474c204b198 gfx/angle/src/compiler/depgraph/DependencyGraphOutput.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/compiler/depgraph/DependencyGraphOutput.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+//
+// Copyright (c) 2012 The ANGLE Project 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 COMPILER_DEPGRAPH_DEPENDENCY_GRAPH_OUTPUT_H
+#define COMPILER_DEPGRAPH_DEPENDENCY_GRAPH_OUTPUT_H
+
+#include "compiler/depgraph/DependencyGraph.h"
+#include "compiler/InfoSink.h"
+
+class TDependencyGraphOutput : public TDependencyGraphTraverser {
+public:
+    TDependencyGraphOutput(TInfoSinkBase& sink) : mSink(sink) {}
+    virtual void visitSymbol(TGraphSymbol* symbol);
+    virtual void visitArgument(TGraphArgument* parameter);
+    virtual void visitFunctionCall(TGraphFunctionCall* functionCall);
+    virtual void visitSelection(TGraphSelection* selection);
+    virtual void visitLoop(TGraphLoop* loop);
+    virtual void visitLogicalOp(TGraphLogicalOp* logicalOp);
+
+    void outputAllSpanningTrees(TDependencyGraph& graph);
+private:
+    void outputIndentation();
+
+    TInfoSinkBase& mSink;
+};
+
+#endif  // COMPILER_DEPGRAPH_DEPENDENCY_GRAPH_OUTPUT_H