Revert 235337 "media: Enabling Opus playback by default."

Very likely breaks media/media-can-play-ogg.html and media/media-can-play-webm.html in webkit layout tests.  Reverting to confirm.

> media: Enabling Opus playback by default.
> 
> Flipping the flag for Opus playback from disabled by default
> to enabled by default. Changing the name of the flag to
> "disable-opus-playback".
> 
> TEST=media_unittests
> BUG=315606
> TBR=cpu
> 
> Review URL: https://codereview.chromium.org/62183002

TBR=vigneshv@chromium.org

Review URL: https://codereview.chromium.org/74303002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235405 0039d316-1c4b-4281-b951-d872f2087c98
linux aura: Avoid trying to activate the already active window.

Trying to activate the currently active window would de-activate it first,
and then re-activate it. This can have side-effects, e.g. when a click results
in a dropdown to be displayed, the mouse-press triggers the dropdown to be
created, but because the parent window loses focus, it also causes the dropdown
to be closed (although the parent window does regain the focus immediately
afterwards).

BUG=319698
R=erg@chromium.org

Review URL: https://codereview.chromium.org/66843013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235406 0039d316-1c4b-4281-b951-d872f2087c98
Revert 234928 "Use software compositor for windows under 64 pixe..."

This broke extension popups.

> Use software compositor for windows under 64 pixels wide or tall.
> 
> They're broken on AMD drivers. Switch back and forth between software and hardware using lost device on the output surface on resize.
> 
> BUG=286609
> R=jamesr@chromium.org
> 
> Review URL: https://codereview.chromium.org/61323003

TBR=jbauman@chromium.org
BUG=286609,319644,312277

Review URL: https://codereview.chromium.org/73723004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235409 0039d316-1c4b-4281-b951-d872f2087c98
ONC policy: Support SSID and Security change.

If the SSID of a ONC policy is changed without changing the GUID, this lead to a partial policy application where everything except the SSID is changed.
This happened because Shill doesn't allow changes of the SSID property after the network creation but the policy application code didn't respect that.

With this change, it's ensured that the respective network configuration (profile entry), is deleted and rewritten on each SSID change.

The same applies to the Security type of the network.

BUG=319362
R=bartfab@chromium.org

Review URL: https://codereview.chromium.org/68213018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235410 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235410