clearFramebuffers  789 Source/core/html/canvas/WebGLRenderingContextBase.cpp     m_drawingBuffer->clearFramebuffers(clearMask);
clearFramebuffers  775 Source/platform/graphics/gpu/DrawingBuffer.cpp     clearFramebuffers(clearMask);
clearFramebuffers   92 Source/platform/graphics/gpu/DrawingBuffer.h     void clearFramebuffers(GLbitfield clearMask);