diff -r 000000000000 -r 6474c204b198 gfx/angle/src/compiler/MapLongVariableNames.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/compiler/MapLongVariableNames.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,59 @@
+//
+// Copyright (c) 2002-2012 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_MAP_LONG_VARIABLE_NAMES_H_
+#define COMPILER_MAP_LONG_VARIABLE_NAMES_H_
+
+#include "GLSLANG/ShaderLang.h"
+
+#include "compiler/intermediate.h"
+#include "compiler/VariableInfo.h"
+
+// This size does not include '\0' in the end.
+#define MAX_SHORTENED_IDENTIFIER_SIZE 32
+
+// This is a ref-counted singleton. GetInstance() returns a pointer to the
+// singleton, and after use, call Release(). GetInstance() and Release() should
+// be paired.
+class LongNameMap {
+public:
+    static LongNameMap* GetInstance();
+    void Release();
+
+    // Return the mapped name if <originalName, mappedName> is in the map;
+    // otherwise, return NULL.
+    const char* Find(const char* originalName) const;
+
+    // Insert a pair into the map.
+    void Insert(const char* originalName, const char* mappedName);
+
+    // Return the number of entries in the map.
+    size_t Size() const;
+
+private:
+    LongNameMap();
+    ~LongNameMap();
+
+    size_t refCount;
+    std::map<std::string, std::string> mLongNameMap;
+};
+
+// Traverses intermediate tree to map attributes and uniforms names that are
+// longer than MAX_SHORTENED_IDENTIFIER_SIZE to MAX_SHORTENED_IDENTIFIER_SIZE.
+class MapLongVariableNames : public TIntermTraverser {
+public:
+    MapLongVariableNames(LongNameMap* globalMap);
+
+    virtual void visitSymbol(TIntermSymbol*);
+    virtual bool visitLoop(Visit, TIntermLoop*);
+
+private:
+    TString mapGlobalLongName(const TString& name);
+
+    LongNameMap* mGlobalMap;
+};
+
+#endif  // COMPILER_MAP_LONG_VARIABLE_NAMES_H_