extensionSupportedAndAllowed 2141 Source/core/html/canvas/WebGLRenderingContextBase.cpp if (!extensionSupportedAndAllowed(tracker)) extensionSupportedAndAllowed 2594 Source/core/html/canvas/WebGLRenderingContextBase.cpp if (extensionSupportedAndAllowed(tracker)) { extensionSupportedAndAllowed 652 Source/core/html/canvas/WebGLRenderingContextBase.h bool extensionSupportedAndAllowed(const ExtensionTracker*);