[telemetry] Fix the race condition occurring when telemetry loads Chrome for Android which may commit the initial page after telemetry begins another navigation, at which point RenderViewHostManager::DidNavigateMainFrame() will toss the other navigation because it's pending.

Review URL: https://codereview.chromium.org/23468031

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228040 0039d316-1c4b-4281-b951-d872f2087c98
Blink roll 159214:159374

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=159215:159374&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/26878005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228041 0039d316-1c4b-4281-b951-d872f2087c98
Add AppListFolderItem

This ended up being pretty trivial without any UI hooks. Feel free to
review this, or just integrate it with any CL of your own.

This depends on https://codereview.chromium.org/26328004/

BUG=304889
R=jennyz@chromium.org, koz@chromium.org

Review URL: https://codereview.chromium.org/26606002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228042 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228042