[Pkg-chromium-maint] Bug#762717: GPU disabled -- The GPU process crashed!

[Juliusz Chroboczek]

Package: chromium
Version:  37.0.2062.120-2

Running on Atom N455, with the integrated graphics and stock Debian
X server.  Chromium disables the GPU:

  GpuProcessHostUIShim: The GPU process crashed!
  GpuProcessHostUIShim: The GPU process crashed!
  GpuProcessHostUIShim: The GPU process crashed!

Running from the console, Chromium logs the following:

ATTENTION: default value of option force_s3tc_enable overridden by environment.
ATTENTION: option value of option force_s3tc_enable ignored.
[11127:11127:0924/184145:ERROR:desktop_window_tree_host_x11.cc(1478)] Not implemented reached in void views::DesktopWindowTreeHostX11::MapWindow(ui::WindowShowState)
[11127:11127:0924/184200:ERROR:command_buffer_proxy_impl.cc(153)] Could not send GpuCommandBufferMsg_Initialize.
[11127:11127:0924/184200:ERROR:webgraphicscontext3d_command_buffer_impl.cc(236)] CommandBufferProxy::Initialize failed.
[11127:11127:0924/184200:ERROR:webgraphicscontext3d_command_buffer_impl.cc(256)] Failed to initialize command buffer.
ATTENTION: default value of option force_s3tc_enable overridden by environment.
ATTENTION: option value of option force_s3tc_enable ignored.
[6:17:0924/184200:ERROR:gpu_channel_host.cc(148)] GpuChannelHost::CreateViewCommandBuffer failed.
[11127:11127:0924/184200:ERROR:command_buffer_proxy_impl.cc(153)] Could not send GpuCommandBufferMsg_Initialize.
[11127:11127:0924/184200:ERROR:webgraphicscontext3d_command_buffer_impl.cc(236)] CommandBufferProxy::Initialize failed.
[11127:11127:0924/184200:ERROR:webgraphicscontext3d_command_buffer_impl.cc(256)] Failed to initialize command buffer.
[6:17:0924/184200:ERROR:webgraphicscontext3d_command_buffer_impl.cc(256)] Failed to initialize command buffer.
ATTENTION: default value of option force_s3tc_enable overridden by environment.
ATTENTION: option value of option force_s3tc_enable ignored.
[6:17:0924/184201:ERROR:command_buffer_proxy_impl.cc(153)] Could not send GpuCommandBufferMsg_Initialize.
[6:17:0924/184201:ERROR:webgraphicscontext3d_command_buffer_impl.cc(236)] CommandBufferProxy::Initialize failed.
[6:17:0924/184201:ERROR:webgraphicscontext3d_command_buffer_impl.cc(256)] Failed to initialize command buffer.
[11127:11127:0924/184201:ERROR:command_buffer_proxy_impl.cc(153)] Could not send GpuCommandBufferMsg_Initialize.
[11127:11127:0924/184201:ERROR:webgraphicscontext3d_command_buffer_impl.cc(236)] CommandBufferProxy::Initialize failed.
[11127:11127:0924/184201:ERROR:webgraphicscontext3d_command_buffer_impl.cc(256)] Failed to initialize command buffer.