diff -r 000000000000 -r 6474c204b198 gfx/angle/src/compiler/Diagnostics.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/compiler/Diagnostics.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+//
+// 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_DIAGNOSTICS_H_
+#define COMPILER_DIAGNOSTICS_H_
+
+#include "compiler/preprocessor/DiagnosticsBase.h"
+
+class TInfoSink;
+
+class TDiagnostics : public pp::Diagnostics
+{
+  public:
+    TDiagnostics(TInfoSink& infoSink);
+    virtual ~TDiagnostics();
+
+    TInfoSink& infoSink() { return mInfoSink; }
+
+    int numErrors() const { return mNumErrors; }
+    int numWarnings() const { return mNumWarnings; }
+
+    void writeInfo(Severity severity,
+                   const pp::SourceLocation& loc,
+                   const std::string& reason,
+                   const std::string& token,
+                   const std::string& extra);
+
+    void writeDebug(const std::string& str);
+
+  protected:
+    virtual void print(ID id,
+                       const pp::SourceLocation& loc,
+                       const std::string& text);
+
+  private:
+    TInfoSink& mInfoSink;
+    int mNumErrors;
+    int mNumWarnings;
+};
+
+#endif  // COMPILER_DIAGNOSTICS_H_