diff -r 000000000000 -r 6474c204b198 gfx/angle/src/compiler/preprocessor/Preprocessor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/compiler/preprocessor/Preprocessor.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,51 @@
+//
+// Copyright (c) 2011 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_PREPROCESSOR_PREPROCESSOR_H_
+#define COMPILER_PREPROCESSOR_PREPROCESSOR_H_
+
+#include <stddef.h>
+
+#include "pp_utils.h"
+
+namespace pp
+{
+
+class Diagnostics;
+class DirectiveHandler;
+struct PreprocessorImpl;
+struct Token;
+
+class Preprocessor
+{
+  public:
+    Preprocessor(Diagnostics* diagnostics, DirectiveHandler* directiveHandler);
+    ~Preprocessor();
+
+    // count: specifies the number of elements in the string and length arrays.
+    // string: specifies an array of pointers to strings.
+    // length: specifies an array of string lengths.
+    // If length is NULL, each string is assumed to be null terminated.
+    // If length is a value other than NULL, it points to an array containing
+    // a string length for each of the corresponding elements of string.
+    // Each element in the length array may contain the length of the
+    // corresponding string or a value less than 0 to indicate that the string
+    // is null terminated.
+    bool init(size_t count, const char* const string[], const int length[]);
+    // Adds a pre-defined macro.
+    void predefineMacro(const char* name, int value);
+
+    void lex(Token* token);
+
+  private:
+    PP_DISALLOW_COPY_AND_ASSIGN(Preprocessor);
+
+    PreprocessorImpl* mImpl;
+};
+
+}  // namespace pp
+#endif  // COMPILER_PREPROCESSOR_PREPROCESSOR_H_
+