Updated the VK Tray button to properly remove visual activated state.

ash/shell.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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 1108 matching lines @@
       RootWindowControllerList controllers = GetAllRootWindowControllers();
       for (RootWindowControllerList::iterator iter = controllers.begin();
            iter != controllers.end(); ++iter) {
         (*iter)->DeactivateKeyboard(
             keyboard::KeyboardController::GetInstance());
       }
     }
     keyboard::KeyboardController::ResetInstance(
         new keyboard::KeyboardController(shell_delegate_->CreateKeyboardUI(),
                                          virtual_keyboard_controller_.get()));
+    for (auto& observer : shell_observers_)
+      observer.OnKeyboardControllerCreated();
   }
 }
 
 void Shell::InitRootWindow(aura::Window* root_window) {
   DCHECK(focus_controller_);
   DCHECK(visibility_controller_.get());
   DCHECK(drag_drop_controller_.get());
 
   aura::client::SetFocusClient(root_window, focus_controller_.get());
   aura::client::SetActivationClient(root_window, focus_controller_.get());
@@ skipping 129 matching lines @@
 void Shell::OnPrefServiceInitialized(
     std::unique_ptr<::PrefService> pref_service) {
   if (!instance_)
     return;
   // |pref_service_| is null if can't connect to Chrome (as happens when
   // running mash outside of chrome --mash and chrome isn't built).
   pref_service_ = std::move(pref_service);
 }
 
 }  // namespace ash