Implicitly detect the use of --in-process-webgl by the absence of a...

Implicitly detect the use of --in-process-webgl by the absence of a
display connection in x11_util, and open our own display instead.
This makes --in-process-webgl work on Linux again.

Tested by running some WebGL and accelerated 2D Canvas content with
--in-process-webgl and --disable-accelerated-compositing.

BUG=55152
TEST=none


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=69892

[Ken Russell (switch to Gerrit), 2010-12-21 22:19:04]

Please review. Thanks.

[Vangelis Kokkevis, 2010-12-21 22:42:04]

LGTM

[greggman, 2010-12-21 22:47:01]

lgtm

http://codereview.chromium.org/6041002/diff/1/app/gfx/gl/gl_context_linux.cc
File app/gfx/gl/gl_context_linux.cc (right):

http://codereview.chromium.org/6041002/diff/1/app/gfx/gl/gl_context_linux.cc#...
app/gfx/gl/gl_context_linux.cc:28: static Display* display = NULL;
I'll assume this works with multiple display, as in this will never change once
queried.

[Ken Russell (switch to Gerrit), 2010-12-21 22:49:59]

http://codereview.chromium.org/6041002/diff/1/app/gfx/gl/gl_context_linux.cc
File app/gfx/gl/gl_context_linux.cc (right):

http://codereview.chromium.org/6041002/diff/1/app/gfx/gl/gl_context_linux.cc#...
app/gfx/gl/gl_context_linux.cc:28: static Display* display = NULL;
On 2010/12/21 22:47:01, greggman wrote:
> I'll assume this works with multiple display, as in this will never change
once
> queried.

Not sure. It'll work as well as x11_util::GetXDisplay() since that uses a static
variable too.