events: Start changing EventHandler interface to not return a value.

ui/views/corewm/focus_controller.cc

 // Copyright (c) 2012 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 "ui/views/corewm/focus_controller.h"
 
 #include "base/auto_reset.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/env.h"
 #include "ui/views/corewm/focus_change_event.h"
@@ skipping 22 matching lines @@
                                   int changing_event_type,
                                   int changed_event_type,
                                   aura::Window** state,
                                   aura::Window* new_state,
                                   bool restack,
                                   ui::EventTarget** event_dispatch_target) {
   int result = ui::ER_UNHANDLED;
   {
     base::AutoReset<ui::EventTarget*> reset(event_dispatch_target, *state);
     FocusChangeEvent changing_event(changing_event_type);
-    result = dispatcher->ProcessEvent(*state, &changing_event);
+    dispatcher->ProcessEvent(*state, &changing_event);
+    result = changing_event.result();
   }
   DCHECK(!(result & ui::ER_CONSUMED))
       << "Focus and Activation events cannot be consumed";
 
   *state = new_state;
 
   if (restack && new_state) {
     StackTransientParentsBelowModalWindow(new_state);
     new_state->parent()->StackChildAtTop(new_state);
   }
@@ skipping 186 matching lines @@
     SetFocusedWindow(rules_->GetNextFocusableWindow(window));
   }
 }
 
 void FocusController::WindowFocusedFromInputEvent(aura::Window* window) {
   FocusWindow(window);
 }
 
 }  // namespace corewm
 }  // namespace views