GpuConsoleMessageCallback  510 content/common/gpu/client/command_buffer_proxy_impl.cc     const GpuConsoleMessageCallback& callback) {
GpuConsoleMessageCallback  136 content/common/gpu/client/command_buffer_proxy_impl.h       const GpuConsoleMessageCallback& callback);
GpuConsoleMessageCallback  195 content/common/gpu/client/command_buffer_proxy_impl.h   GpuConsoleMessageCallback console_message_callback_;