Revise comments for the PageState property on NavigationEntry.

R=joth@chromium.org

Review URL: https://codereview.chromium.org/87343002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237450 0039d316-1c4b-4281-b951-d872f2087c98
Exclude mojo/examples from production related presubmit checks

R=joi@chromium.org

Review URL: https://codereview.chromium.org/87223002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237451 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237451
Revert 237280 "Remove TraceController"

Seems to have broken trace-based telemetry benchmarks on android.

BUG=323749

> Remove TraceController
> 
> TraceController is obsoleted by TracingController.
> Changed all remaining clients to use TracingController.
> 
> BUG=none
> 
> Review URL: https://codereview.chromium.org/67683003

TBR=wangxianzhu@chromium.org

Review URL: https://codereview.chromium.org/89753004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237452 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237452