TaskManager should check for DevTools windows on start

Until now it only iterated over the instances of WebContents reported by TabContentsIterator, which correspond to the tabs. We now check for every such tab, if it also has a docked (embedded) DevTools window.

TEST=Open first an embedded (not self-standing) DevTools window in a tab, then the task manager, and check that the DevTools window is listed among the processes.
BUG=237841

Review URL: https://codereview.chromium.org/24195027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225475 0039d316-1c4b-4281-b951-d872f2087c98
From VideoCaptureManager, remove kStartOpenSessionId.

This mechanism is not longer used by PPAPI. It was
deleted in r206188 ( https://codereview.chromium.org/16920003/ ).

BUG=289684, 224101
TEST=webcamtoy.com works in flash mode with pepper flash

Review URL: https://codereview.chromium.org/24211006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225476 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225476
Profile Reset dialog: the feedback bar doesn't show non-ascii chars.

BUG=297209

Review URL: https://codereview.chromium.org/24351003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225477 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225477
Add more Sync Node Browser logging for Synced Notifications.

Now that we are seeing issues with Synced Notifications in the field,
adding more logging will make it easier to debug the issues.

BUG=none

Review URL: https://codereview.chromium.org/24365007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225478 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225478