Add a UMA stat to track if the Browser blacklist is Set on the Renderer

This shouldn't be happening, but we got some crash reports suggesting it
does. Unable to repo locally so this stat will verify it does occur and
then can be used to verify our fixes actually fix it.

TBR=asvitkine@chromium.org
BUG=329023

Review URL: https://codereview.chromium.org/166953002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251454 0039d316-1c4b-4281-b951-d872f2087c98
Partial revert of "Restart fullscreen video playback when switching back from background"

This CL partially reverts r242570 and r243346.

The functionality added in those patches has been removed while some refactoring part
has been kept because those make sense and also because some code came later would have
to be moved otherwise.

The suspend/resume fullscreen video logic does not work well when the browser
activity is destroyed when it is in the background. Unfortunately I could not
find a way to make it work for that case yet so it's better remove it.

BUG=323697

Review URL: https://codereview.chromium.org/157783004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251455 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251454
Move SearchTermsData::ForceInstantResultsParam() to chrome::ForceInstantResultsParam().

Follow up of crrev.com/151813002.

BUG=none
TEST=none

Review URL: https://codereview.chromium.org/164493005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251456 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251456