Revert 240962 "Revert 239758 "Enable Audio/Video dev monitoring ..."

Does not compile on mac.

> Revert 239758 "Enable Audio/Video dev monitoring and Video captu..."
> 
> > Enable Audio/Video dev monitoring and Video capture via AVFoundation by default.
> > 
> > Flipping the command line flag from explicitly enabling AVFoundation to
> > disable AVFoundation.
> > 
> > In the past there was a startup performance regression (http://crbug.com/311325 
> > and http://crbug.com/311437), those type of regression should be monitored 
> > carefully during the next couple of days.
> > 
> > BUG=288562
> > 
> > Review URL: https://codereview.chromium.org/101753003
> 
> TBR=mcasas@chromium.org
> 
> Review URL: https://codereview.chromium.org/116553003

TBR=vrk@chromium.org

Review URL: https://codereview.chromium.org/116613002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240969 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240969
[rAC, OSX] Focus on first input when fields become visible.

Whenever the main dialog becomes visible, focus on the first invalid
field. If there are no invalid fields, focus on the first field instead.

R=rsesek@chromium.org
BUG=324249

Review URL: https://codereview.chromium.org/112133003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240970 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240970
Remove unused OmniboxView::GetMaxEditWidth.

BUG=131660
TEST=No build breaks; mo missing functionality.
R=sky@chromium.org

Review URL: https://codereview.chromium.org/114233004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240971 0039d316-1c4b-4281-b951-d872f2087c98
Land Recent QUIC Changes.

Add convenience HighestPriority and LowestPriority methods to QuicUtils

Merge internal change: 58122394
https://codereview.chromium.org/112463003/


Change QUIC to only ack every other packet when there are no losses
within the last four received packets.

Merge internal change: 58111242
https://codereview.chromium.org/113123004/


Add a version() convenience method to ReliableQuicStream.

Merge internal change: 58110960
https://codereview.chromium.org/112273003/


Fix two tests that fail when FLAGS_enable_quic_pacing is enabled

Merge internal change: 58101756
https://codereview.chromium.org/115393003/


Remove deprecated flag FLAGS_pad_quic_handshake_packets.

Merge internal change: 58101024
https://codereview.chromium.org/114923007/


Remove the is_server argument from the QuicSession constructor.
In a previous CL, I removed this from TestSession, but I missed, that
it's an argument of the main QuicSession constructor.

Merge internal change: 58059515
https://codereview.chromium.org/102313005/


Fix QUIC's TCP style retransmission logic to only send a maximum of 2
packets per incoming ack instead of 10.

Merge internal change: 58059328
https://codereview.chromium.org/109993008/


Remove redundant |is_server| argument from TestSession and call the
connection's is_server() method instead.

Merge internal change: 58047118
https://codereview.chromium.org/110373004/


Minor cleanup of QUIC MockConnection and PacketSavingConnection
constructors.

Merge internal change: 58042657
https://codereview.chromium.org/114933003/


Cleanup in QUIC to merge the previous_transmissions_map in
QuicSentPacketManager with the unacked_packets map.

Merge internal change: 58011531
https://codereview.chromium.org/109323012/

R=rch@chromium.org

Review URL: https://codereview.chromium.org/115463002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240972 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240972