Adds capture to the mojo window_manager.

services/window_manager/focus_controller.cc

Index: services/window_manager/focus_controller.cc
diff --git a/services/window_manager/focus_controller.cc b/services/window_manager/focus_controller.cc
index ba6454acc66f6d2b0ee047713b9b701e42a9ef44..e58dca862bd57dd49675a5e3526ea0b275e06bca 100644
--- a/services/window_manager/focus_controller.cc
+++ b/services/window_manager/focus_controller.cc
@@ -74,9 +74,6 @@ void FocusController::FocusView(View* view) {
     return;
   }
 
-  // TODO(erg): We need to early abort in the of a view having
-  // capture. However, we currently don't have a capture client here.
-
   // Focusing a window also activates its containing activatable window. Note
   // that the rules could redirect activation activation and/or focus.
   View* focusable = rules_->GetFocusableView(view);