Rename LauncherDelegate to ShelfDelegate.

- move launcher_delegate.h from launcher to shelf.
- rename to shelf_delegate.h

- rename LauncherDelegateImpl to ShelfDelegateImpl.
- rename to shelf_delegate_impl.*

- rename TestLauncherDelegate to TestShelfDelegate.
- rename test_shelf_delegate.* to test_shelf_delegate.* 

BUG=248353
TEST=None, no functional changes
[email protected],[email protected]

Review URL: https://codereview.chromium.org/103223005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239531 0039d316-1c4b-4281-b951-d872f2087c98
38 files changed