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diff --git a/chromium/third_party/angle/src/compiler/translator/SymbolTable.h b/chromium/third_party/angle/src/compiler/translator/SymbolTable.h
new file mode 100644
index 00000000000..3f932a45432
--- /dev/null
+++ b/chromium/third_party/angle/src/compiler/translator/SymbolTable.h
@@ -0,0 +1,431 @@
+//
+// Copyright (c) 2002-2014 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 _SYMBOL_TABLE_INCLUDED_
+#define _SYMBOL_TABLE_INCLUDED_
+
+//
+// Symbol table for parsing.  Has these design characteristics:
+//
+// * Same symbol table can be used to compile many shaders, to preserve
+//   effort of creating and loading with the large numbers of built-in
+//   symbols.
+//
+// * Name mangling will be used to give each function a unique name
+//   so that symbol table lookups are never ambiguous.  This allows
+//   a simpler symbol table structure.
+//
+// * Pushing and popping of scope, so symbol table will really be a stack 
+//   of symbol tables.  Searched from the top, with new inserts going into
+//   the top.
+//
+// * Constants:  Compile time constant symbols will keep their values
+//   in the symbol table.  The parser can substitute constants at parse
+//   time, including doing constant folding and constant propagation.
+//
+// * No temporaries:  Temporaries made from operations (+, --, .xy, etc.)
+//   are tracked in the intermediate representation, not the symbol table.
+//
+
+#include <assert.h>
+
+#include "common/angleutils.h"
+#include "compiler/translator/InfoSink.h"
+#include "compiler/translator/intermediate.h"
+
+// Symbol base class. (Can build functions or variables out of these...)
+class TSymbol
+{
+  public:
+    POOL_ALLOCATOR_NEW_DELETE();
+    TSymbol(const TString *n)
+        : uniqueId(0),
+          name(n)
+    {
+    }
+    virtual ~TSymbol()
+    {
+        // don't delete name, it's from the pool
+    }
+
+    const TString &getName() const
+    {
+        return *name;
+    }
+    virtual const TString &getMangledName() const
+    {
+        return getName();
+    }
+    virtual bool isFunction() const
+    {
+        return false;
+    }
+    virtual bool isVariable() const
+    {
+        return false;
+    }
+    void setUniqueId(int id)
+    {
+        uniqueId = id;
+    }
+    int getUniqueId() const
+    {
+        return uniqueId;
+    }
+    void relateToExtension(const TString &ext)
+    {
+        extension = ext;
+    }
+    const TString &getExtension() const
+    {
+        return extension;
+    }
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(TSymbol);
+
+    int uniqueId; // For real comparing during code generation
+    const TString *name;
+    TString extension;
+};
+
+// Variable class, meaning a symbol that's not a function.
+// 
+// There could be a separate class heirarchy for Constant variables;
+// Only one of int, bool, or float, (or none) is correct for
+// any particular use, but it's easy to do this way, and doesn't
+// seem worth having separate classes, and "getConst" can't simply return
+// different values for different types polymorphically, so this is 
+// just simple and pragmatic.
+class TVariable : public TSymbol
+{
+  public:
+    TVariable(const TString *name, const TType &t, bool uT = false)
+        : TSymbol(name),
+          type(t),
+          userType(uT),
+          unionArray(0)
+    {
+    }
+    virtual ~TVariable()
+    {
+    }
+    virtual bool isVariable() const
+    {
+        return true;
+    }
+    TType &getType()
+    {
+        return type;
+    }
+    const TType &getType() const
+    {
+        return type;
+    }
+    bool isUserType() const
+    {
+        return userType;
+    }
+    void setQualifier(TQualifier qualifier)
+    {
+        type.setQualifier(qualifier);
+    }
+
+    ConstantUnion *getConstPointer()
+    { 
+        if (!unionArray)
+            unionArray = new ConstantUnion[type.getObjectSize()];
+
+        return unionArray;
+    }
+
+    ConstantUnion *getConstPointer() const
+    {
+        return unionArray;
+    }
+
+    void shareConstPointer(ConstantUnion *constArray)
+    {
+        if (unionArray == constArray)
+            return;
+
+        delete[] unionArray;
+        unionArray = constArray;  
+    }
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(TVariable);
+
+    TType type;
+    bool userType;
+    // we are assuming that Pool Allocator will free the memory
+    // allocated to unionArray when this object is destroyed.
+    ConstantUnion *unionArray;
+};
+
+// The function sub-class of symbols and the parser will need to
+// share this definition of a function parameter.
+struct TParameter
+{
+    TString *name;
+    TType *type;
+};
+
+// The function sub-class of a symbol.  
+class TFunction : public TSymbol
+{
+  public:
+    TFunction(TOperator o)
+        : TSymbol(0),
+          returnType(TType(EbtVoid, EbpUndefined)),
+          op(o),
+          defined(false)
+    {
+    }
+    TFunction(const TString *name, TType &retType, TOperator tOp = EOpNull)
+        : TSymbol(name),
+          returnType(retType),
+          mangledName(TFunction::mangleName(*name)),
+          op(tOp),
+          defined(false)
+    {
+    }
+    virtual ~TFunction();
+    virtual bool isFunction() const
+    {
+        return true;
+    }
+
+    static TString mangleName(const TString &name)
+    {
+        return name + '(';
+    }
+    static TString unmangleName(const TString &mangledName)
+    {
+        return TString(mangledName.c_str(), mangledName.find_first_of('('));
+    }
+
+    void addParameter(TParameter &p)
+    { 
+        parameters.push_back(p);
+        mangledName = mangledName + p.type->getMangledName();
+    }
+
+    const TString &getMangledName() const
+    {
+        return mangledName;
+    }
+    const TType &getReturnType() const
+    {
+        return returnType;
+    }
+
+    void relateToOperator(TOperator o)
+    {
+        op = o;
+    }
+    TOperator getBuiltInOp() const
+    {
+        return op;
+    }
+
+    void setDefined()
+    {
+        defined = true;
+    }
+    bool isDefined()
+    {
+        return defined;
+    }
+
+    size_t getParamCount() const
+    {
+        return parameters.size();
+    }
+    const TParameter &getParam(size_t i) const
+    {
+        return parameters[i];
+    }
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(TFunction);
+
+    typedef TVector<TParameter> TParamList;
+    TParamList parameters;
+    TType returnType;
+    TString mangledName;
+    TOperator op;
+    bool defined;
+};
+
+// Interface block name sub-symbol
+class TInterfaceBlockName : public TSymbol
+{
+  public:
+    TInterfaceBlockName(const TString *name)
+        : TSymbol(name)
+    {
+    }
+
+    virtual ~TInterfaceBlockName()
+    {
+    }
+};
+
+class TSymbolTableLevel
+{
+  public:
+    typedef TMap<TString, TSymbol *> tLevel;
+    typedef tLevel::const_iterator const_iterator;
+    typedef const tLevel::value_type tLevelPair;
+    typedef std::pair<tLevel::iterator, bool> tInsertResult;
+
+    TSymbolTableLevel()
+    {
+    }
+    ~TSymbolTableLevel();
+
+    bool insert(const TString &name, TSymbol &symbol);
+    bool insert(TSymbol &symbol);
+
+    TSymbol *find(const TString &name) const;
+
+    void relateToOperator(const char *name, TOperator op);
+    void relateToExtension(const char *name, const TString &ext);
+
+  protected:
+    tLevel level;
+    static int uniqueId; // for unique identification in code generation
+};
+
+enum ESymbolLevel
+{
+    COMMON_BUILTINS = 0,
+    ESSL1_BUILTINS = 1,
+    ESSL3_BUILTINS = 2,
+    LAST_BUILTIN_LEVEL = ESSL3_BUILTINS,
+    GLOBAL_LEVEL = 3
+};
+
+class TSymbolTable
+{
+  public:
+    TSymbolTable()
+    {
+        // The symbol table cannot be used until push() is called, but
+        // the lack of an initial call to push() can be used to detect
+        // that the symbol table has not been preloaded with built-ins.
+    }
+
+    ~TSymbolTable();
+
+    // When the symbol table is initialized with the built-ins, there should
+    // 'push' calls, so that built-ins are at level 0 and the shader
+    // globals are at level 1.
+    bool isEmpty()
+    {
+        return table.empty();
+    }
+    bool atBuiltInLevel()
+    {
+        return currentLevel() <= LAST_BUILTIN_LEVEL;
+    }
+    bool atGlobalLevel()
+    {
+        return currentLevel() <= GLOBAL_LEVEL;
+    }
+    void push()
+    {
+        table.push_back(new TSymbolTableLevel);
+        precisionStack.push_back(new PrecisionStackLevel);
+    }
+
+    void pop()
+    {
+        delete table.back();
+        table.pop_back();
+
+        delete precisionStack.back();
+        precisionStack.pop_back();
+    }
+
+    bool declare(TSymbol &symbol)
+    {
+        return insert(currentLevel(), symbol);
+    }
+
+    bool insert(ESymbolLevel level, TSymbol &symbol)
+    {
+        return table[level]->insert(symbol);
+    }
+
+    bool insertConstInt(ESymbolLevel level, const char *name, int value)
+    {
+        TVariable *constant = new TVariable(
+            NewPoolTString(name), TType(EbtInt, EbpUndefined, EvqConst, 1));
+        constant->getConstPointer()->setIConst(value);
+        return insert(level, *constant);
+    }
+
+    void insertBuiltIn(ESymbolLevel level, TType *rvalue, const char *name,
+                       TType *ptype1, TType *ptype2 = 0, TType *ptype3 = 0,
+                       TType *ptype4 = 0, TType *ptype5 = 0);
+
+    TSymbol *find(const TString &name, int shaderVersion,
+                  bool *builtIn = NULL, bool *sameScope = NULL);
+    TSymbol *findBuiltIn(const TString &name, int shaderVersion);
+    
+    TSymbolTableLevel *getOuterLevel()
+    {
+        assert(currentLevel() >= 1);
+        return table[currentLevel() - 1];
+    }
+
+    void relateToOperator(ESymbolLevel level, const char *name, TOperator op)
+    {
+        table[level]->relateToOperator(name, op);
+    }
+    void relateToExtension(ESymbolLevel level, const char *name, const TString &ext)
+    {
+        table[level]->relateToExtension(name, ext);
+    }
+    void dump(TInfoSink &infoSink) const;
+
+    bool setDefaultPrecision(const TPublicType &type, TPrecision prec)
+    {
+        if (!SupportsPrecision(type.type))
+            return false;
+        if (type.isAggregate())
+            return false; // Not allowed to set for aggregate types
+        int indexOfLastElement = static_cast<int>(precisionStack.size()) - 1;
+        // Uses map operator [], overwrites the current value
+        (*precisionStack[indexOfLastElement])[type.type] = prec;
+        return true;
+    }
+
+    // Searches down the precisionStack for a precision qualifier
+    // for the specified TBasicType
+    TPrecision getDefaultPrecision(TBasicType type);
+
+    static int nextUniqueId()
+    {
+        return ++uniqueIdCounter;
+    }
+
+  private:
+    ESymbolLevel currentLevel() const
+    {
+        return static_cast<ESymbolLevel>(table.size() - 1);
+    }
+
+    std::vector<TSymbolTableLevel *> table;
+    typedef TMap<TBasicType, TPrecision> PrecisionStackLevel;
+    std::vector< PrecisionStackLevel *> precisionStack;
+
+    static int uniqueIdCounter;
+};
+
+#endif // _SYMBOL_TABLE_INCLUDED_