Reviewed by Kenneth Russell.

        shaderSource needs to preserve original source
        https://bugs.webkit.org/show_bug.cgi?id=52833

        * fast/canvas/webgl/gl-getshadersource-expected.txt: Added.
        * fast/canvas/webgl/gl-getshadersource.html: Added.
2011-01-26  Zhenyao Mo  <zmo@google.com>

        Reviewed by Kenneth Russell.

        shaderSource needs to preserve original source
        https://bugs.webkit.org/show_bug.cgi?id=52833

        Test: fast/canvas/webgl/gl-getshadersource.html

        * html/canvas/WebGLRenderingContext.cpp:
        (WebCore::WebGLRenderingContext::getShaderParameter): Intercept SHADER_SOURCE_LENGTH.
        (WebCore::WebGLRenderingContext::getShaderSource): Intercept the call.
        (WebCore::WebGLRenderingContext::shaderSource): Cache the source.
        * html/canvas/WebGLShader.cpp: Cache shader source.
        (WebCore::WebGLShader::WebGLShader):
        * html/canvas/WebGLShader.h: Ditto.
        (WebCore::WebGLShader::getSource):
        (WebCore::WebGLShader::setSource):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@76814 268f45cc-cd09-0410-ab3c-d52691b4dbfc