ash: Rename LauncherModel to ShelfModel.

* Move launcher_model.* from launcher/ to shelf/
* Rename to shelf_model.*

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

Review URL: https://codereview.chromium.org/71653003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235217 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ash/shell/window_watcher.h b/ash/shell/window_watcher.h
index 7a2c7c0..4654993 100644
--- a/ash/shell/window_watcher.h
+++ b/ash/shell/window_watcher.h
@@ -24,7 +24,7 @@
 // TODO(sky): fix this class, its a bit broke with workspace2.
 
 // WindowWatcher is responsible for listening for newly created windows and
-// creating items on the Launcher for them.
+// creating items on the Shelf for them.
 class WindowWatcher : public aura::WindowObserver,
                       public gfx::DisplayObserver {
  public: