GL: Re-enable sRGB and BGRA8 extensions GL_EXT_sRGB_write_control and GL_EXT_texture_format_BGRA8888 were disabled on all of Android as a workaround for Nexus5X driver bugs. Scope the disablement to Qualcomm only. Bug: angleproject:347724909 Change-Id: I99d55ee12a98c1b46613be4aa92e92a0e576a82b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5637249 Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com> Reviewed-by: Yuxin Hu <yuxinhu@google.com> Commit-Queue: Geoff Lang <geofflang@chromium.org>