Revert 235927 "Taskbar runtime profile badge should not use Inco..."

Hits NOTREACHED() on linux_chromeos:

[0x0000026f6dd4] chromeos::ProfileHelper::GetUserIdHashFromProfile()
[0x0000026f65d1] AvatarMenu::GetImageForMenuButton()
[0x000001a9bbaa] BrowserNonClientFrameView::UpdateAvatarInfo()
[0x000001a9c792] BrowserNonClientFrameViewAsh::Init()
[0x000001968e27] chrome::CreateBrowserNonClientFrameView()

> Taskbar runtime profile badge should not use Incognito icon.
> 
> This CL changes the taskbar profile badge to use the profile's avatar
> icon when the browser window is OTR.
> 
> This is necessary because the profile badge needs to match the shortcut
> that is pinned to the taskbar, which won't use the incognito icon.
> 
> Previously, the taskbar badge would be dependent on the
> OTR status of the last browser window to be opened.
> 
> BUG=318652
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=235587
> 
> Review URL: https://codereview.chromium.org/71653004

TBR=calamity@chromium.org

Review URL: https://codereview.chromium.org/75973003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235951 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235951