Speed up fix for expando-loss conformance test.

third_party/WebKit/Source/modules/webgl/WebGLProgram.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 40 matching lines @@
     void increaseLinkCount();
 
     unsigned activeTransformFeedbackCount() const { return m_activeTransformFeedbackCount; }
     void increaseActiveTransformFeedbackCount();
     void decreaseActiveTransformFeedbackCount();
 
     WebGLShader* getAttachedShader(GLenum);
     bool attachShader(WebGLShader*);
     bool detachShader(WebGLShader*);
 
+    V8CopyablePersistent<v8::Array>* getPersistentCache();
+
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     explicit WebGLProgram(WebGLRenderingContextBase*);
 
     void deleteObjectImpl(gpu::gles2::GLES2Interface*) override;
 
 private:
     bool isProgram() const override { return true; }
 
     void cacheInfoIfNeeded(WebGLRenderingContextBase*);
 
     GLint m_linkStatus;
 
     // This is used to track whether a WebGLUniformLocation belongs to this
     // program or not.
     unsigned m_linkCount;
 
     // This is used to track the program being used by active transform
     // feedback objects.
     unsigned m_activeTransformFeedbackCount;
 
     Member<WebGLShader> m_vertexShader;
     Member<WebGLShader> m_fragmentShader;
 
     bool m_infoValid;
+
+    V8CopyablePersistent<v8::Array> m_shaderWrappers;
 };
 
 } // namespace blink
 
 #endif // WebGLProgram_h