Adds capture to the mojo window_manager.

services/window_manager/focus_controller.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "services/window_manager/focus_controller.h"
 
 #include "base/auto_reset.h"
 #include "mojo/services/view_manager/public/cpp/view_property.h"
 #include "mojo/services/view_manager/public/cpp/view_tracker.h"
+#include "services/window_manager/capture_controller.h"
 #include "services/window_manager/focus_controller_observer.h"
 #include "services/window_manager/focus_rules.h"
 #include "services/window_manager/view_target.h"
 #include "services/window_manager/window_manager_app.h"
 #include "ui/events/event.h"
 
 DECLARE_VIEW_PROPERTY_TYPE(window_manager::FocusController*);
 
 using mojo::View;
 
@@ skipping 47 matching lines @@
 bool FocusController::CanActivateView(View* view) const {
   return rules_->CanActivateView(view);
 }
 
 void FocusController::FocusView(View* view) {
   if (view &&
       (view->Contains(focused_view_) || view->Contains(active_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.
+  // We should not be messing with the focus if the window has capture, unless
+  // no view has focus.
+  if (view && (GetCaptureView(view) == view) && focused_view_)

[sky, 2014/12/16 03:44:20]

This was was recently nuked from chrome:
https://codereview.chromium.org/753223004/diff/60001/ui/wm/core/focus_control...
.

+    return;
 
   // 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);
   View* activatable =
       focusable ? rules_->GetActivatableView(focusable) : nullptr;
 
   // We need valid focusable/activatable windows in the event we're not clearing
   // focus. "Clearing focus" is inferred by whether or not |window| passed to
   // this function is non-null.
@@ skipping 224 matching lines @@
 }
 
 FocusController* GetFocusController(View* root_view) {
   if (root_view)
     DCHECK_EQ(root_view->GetRoot(), root_view);
   return root_view ?
       root_view->GetLocalProperty(kRootViewFocusController) : nullptr;
 }
 
 }  // namespace window_manager