Added code to call CloseAsh in place of closing secondary widgets on Windows.
Here is what happens in attached bug:
1. UserManagerView (Profile view) adds a reference to browser process by calling StartKeepAlive.
2. UserManagerView is a secondary widget.
3. Current code for windows does EnumWindows for closing all secondary widgets in CloseAllSecondaryWidgets, which works only for desktop mode.
4. In Chrome on ASH EnumWindows doesn't do anything as they are not regular windows.
5. Because UserManagerView doesn't get chance to close through CloseAllSecondaryWidgets, it doesn't release reference and we browser process keeps running.

CloseAsh closes all child widgets, which might be a overkill but works for now.

BUG=340967
R=cpu,sky,ananta

Review URL: https://codereview.chromium.org/173403002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256244 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256244
Revert 256134 "Cast: Using a min filter to compute time offset"

End2EndTest.ResetReferenceFrameId started failing very frequently with
256134 and closing the tree.

BUG=351241

> Cast: Using a min filter to compute time offset
> 
> Modifying the time offset filter to take to minimum of the first 10 values. 
> Once ten offset values were seen, the value will be constant for the entire session. 
> This may be justified by the fact we are seeking the offset between sender and
>  receiver without accounting the network jitter.
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=255166
> 
> Review URL: https://codereview.chromium.org/186043003

TBR=mikhal@chromium.org

Review URL: https://codereview.chromium.org/195293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256246 0039d316-1c4b-4281-b951-d872f2087c98
Removed dependency of http_download from nacl tree in nacl sdk.

R=binji@chromium.org, mseaborn@chromium.org, noelallen@chromium.org, sbc@chromium.org
BUG=
TEST= trybots

Review URL: https://codereview.chromium.org/190853012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256247 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256247