Revert 223064 "Merge 222769 "gpu: Re-enable virtual contexts on ..."
Revert 223064 "Merge 222769 "gpu: Re-enable virtual contexts on ..."

BUG=292734

> Merge 222769 "gpu: Re-enable virtual contexts on Qualcomm"
>
> > gpu: Re-enable virtual contexts on Qualcomm
> >
> > Non-virtual contexts on Qualcomm GPUs sometimes cause out-of-order
> > frames to be displayed, so turn GL context virtualization back on.
> >
> > BUG=289461
> >
> > Review URL: https://chromiumcodereview.appspot.com/23460029
>
> TBR=skyostil@chromium.org
>
> Review URL: https://codereview.chromium.org/23460039

R=skyostil@chromium.org
TBR=skyostil@google.com

Review URL: https://codereview.chromium.org/23694038

git-svn-id: 986b6b4560a3241247e958d20c9d693db6a01511@223910 0039d316-1c4b-4281-b951-d872f2087c98

littlstar/chromium.src,ondra-novak/chromium.src,patrickm/chromium.src,ondra-novak/chromium.src,patrickm/chromium.src,patrickm/chromium.src,patrickm/chromium.src,patrickm/chromium.src,littlstar/chromium.src,ondra-novak/chromium.src,patrickm/chromium.src,patrickm/chromium.src,patrickm/chromium.src,littlstar/chromium.src,ondra-novak/chromium.src,littlstar/chromium.src,littlstar/chromium.src,patrickm/chromium.src,ondra-novak/chromium.src,littlstar/chromium.src,ondra-novak/chromium.src,ondra-novak/chromium.src,ondra-novak/chromium.src,ondra-novak/chromium.src,littlstar/chromium.src,littlstar/chromium.src