More improvements to trace logging. - output 'glDrawArrays' instead of 'DrawArrays' - output context IDs for multithreaded scenarios - output to trace even when platform logging is on - fix newlines in trace file output Bug: angleproject:3815 Change-Id: Ie07c5c91d9eae6204aaf6f6319ef318b88d292aa Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1761163 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>