Revert "Flush the texture staged updates when destroying context share group" This reverts commit 5c29d795d1625f71ac6999f157b6f3bba79d5256. Reason for revert: this is causing some test failures on chromium and blocking the angle-chromium auto roller job: https://chromium-review.googlesource.com/c/chromium/src/+/3529771/ Original change's description: > Flush the texture staged updates when destroying context share group > > If we are using the extension EGL_ANGLE_display_texture_share_group, > flush the texture staged updates upon destroying the context. With the > extension enabled, the texture could still be alive when both context > and its' EGL::ShareGroup are destroyed. If we have staged updates not > yet flushed, the updates will keep the ShareGroupVk bufferpool occupied, > causing an error upon ShareGroupVk::onDestroy(). > > Bug: chromium:1299211 > Change-Id: I260de93c3a3099e023e31acbe017803e824459ad > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3495879 > Reviewed-by: Charlie Lao <cclao@google.com> > Reviewed-by: Jamie Madill <jmadill@chromium.org> > Commit-Queue: Yuxin Hu <yuxinhu@google.com> Bug: chromium:1299211 Change-Id: I214161d6a8aec834e1efc5fc9d2479e62e3bfae0 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3530505 Auto-Submit: Yuxin Hu <yuxinhu@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>