Will no longer force jobs=1 with filters in bot mode.

The WebRTC bots happen to run with gtest filters, but want to run tests
in parallel anyway. It makes sense for bot mode to disregard the gtest
filter rule, which is a good heuristic in other cases.

BUG=402089

Review URL: https://codereview.chromium.org/485733002

git-svn-id: http://src.chromium.org/svn/trunk/src/base@290274 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
[Android] Make ApplicationStatus thread safe

- Make sActivityInfo a ConcurrentHashMap instead of just a HashMap.

BUG=403951

Review URL: https://codereview.chromium.org/479603003

git-svn-id: http://src.chromium.org/svn/trunk/src/base@290379 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
Mac: Support default browser Handoff in Yosemite.

This allows Chrome to accept a Handoff from any app when Chrome is the default
browser.  This has been manually tested.

Note that getting this to work in Yosemite DP5 requires manual modification of
the Info.plist prior to codesigning, as well as Chrome to be built as a 64-bit
binary. The former is an Apple bug, and the latter won't matter, since we're
phasing Chrome off of 32-bits. See bug for more details.

BUG=381516

Review URL: https://codereview.chromium.org/481563002

git-svn-id: http://src.chromium.org/svn/trunk/src/base@290404 4ff67af0-8c30-449e-8e8b-ad334ec8d88c