GitLab

media: Add more trace events in CdmAdapter

Add TRACE_EVENTs for all methods that call into the CDM so that we can
monitor CDM's performance more closely.

Bug: 879970
Test: Manually tested and checked traces.
Change-Id: I61c063ad656b852463195b2cea93f91aee8d91ba
Reviewed-on: https://chromium-review.googlesource.com/c/1281042Reviewed-by: Frank Liberato <liberato@chromium.org>
Commit-Queue: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599844}