Remove some stray blink::WebGraphicsContext3D references from ui/

This type isn't used anywhere and doesn't need to be forward declared.

TBR=sky

Review URL: https://codereview.chromium.org/142713005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247890 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247890
[Mac] Check if a profile is locked before allowing a new window to be opened.

BUG=331406
TEST=With the --new-profile-management flag, start Chrome. Sign in a profile, and
choose "View all people" from the avatar menu once that is complete. Close the
profile browser, then close the user manager window (you should have no windows open)
1. Clicking on the docked Chrome icon should open the user manager and 2. Command-N
(or Open New Window) form the docked Chrome icon should do the same.

Review URL: https://codereview.chromium.org/129333002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247891 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247891