tree 57a90dc3d1f665f1a45d9849f4d3feb3b59b19cb
parent f35b36d4e36b9cd15de297fc94e155c403f19372
author Eric Seidel <eseidel@chromium.org> 1430247946 -0700
committer Eric Seidel <eseidel@chromium.org> 1430248302 -0700

Update SDK README to discuss about:tracing and observatory.

TBR=ianh@google.com

Review URL: https://codereview.chromium.org/1114553004