Preserve          529 Source/core/html/canvas/WebGLRenderingContextBase.cpp     DrawingBuffer::PreserveDrawingBuffer preserve = requestedAttributes->preserveDrawingBuffer() ? DrawingBuffer::Preserve : DrawingBuffer::Discard;
Preserve         5381 Source/core/html/canvas/WebGLRenderingContextBase.cpp         DrawingBuffer::PreserveDrawingBuffer preserve = m_requestedAttributes->preserveDrawingBuffer() ? DrawingBuffer::Preserve : DrawingBuffer::Discard;
Preserve          114 Source/platform/graphics/gpu/DrawingBufferTest.cpp         m_drawingBuffer = DrawingBuffer::create(m_context.get(), IntSize(initialWidth, initialHeight), DrawingBuffer::Preserve, contextEvictionManager.release());