DisplayGLX: fix a SwapControl copy-paste error
DisplayGLX: fix a SwapControl copy-paste error

BUG=angleproject:1304

Change-Id: If0ec8682b1d519bc6460cd6ed82f42c4c1ceb952
Reviewed-on: https://chromium-review.googlesource.com/324930
Commit-Queue: Corentin Wallez <470c533e86f4f848c98c7e11fffc2d043494a401@chromium.org>
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Tryjob-Request: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Tested-by: Corentin Wallez <470c533e86f4f848c98c7e11fffc2d043494a401@chromium.org>

domokit/waterfall,mlfarrell/angle,ecoal95/angle,ecoal95/angle,MSOpenTech/angle,domokit/waterfall,MSOpenTech/angle,ppy/angle,ecoal95/angle,MSOpenTech/angle,ppy/angle,ecoal95/angle,ecoal95/angle,ppy/angle,mikolalysenko/angle,mikolalysenko/angle,mikolalysenko/angle,mlfarrell/angle,mikolalysenko/angle,mlfarrell/angle,mlfarrell/angle,MSOpenTech/angle,ppy/angle