Refactor BrowserShortcutLauncherItemController to get profile from launcher

Profile that CLC contains can change during the runtime.
To get right profile, BSLIC gets profile from launcher.

R=skuhne@chromium.org
BUG=301796
TEST=Compiles, manual test

Review URL: https://codereview.chromium.org/25239002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226112 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226112