TextureExtensionFlag 4350 Source/core/html/canvas/WebGLRenderingContextBase.cpp     WebGLTexture::TextureExtensionFlag flag = static_cast<WebGLTexture::TextureExtensionFlag>((extensionEnabled(OESTextureFloatLinearName) ? WebGLTexture::TextureFloatLinearExtensionEnabled : 0)
TextureExtensionFlag  235 Source/core/html/canvas/WebGLTexture.cpp bool WebGLTexture::needToUseBlackTexture(TextureExtensionFlag flag) const
TextureExtensionFlag   72 Source/core/html/canvas/WebGLTexture.h     bool needToUseBlackTexture(TextureExtensionFlag) const;