Add a browser-test for the keyboard widget.

chrome/browser/ui/touch/keyboard/keyboard_manager.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/touch/keyboard/keyboard_manager.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser_list.h"
@@ skipping 128 matching lines @@
 
   transform_.reset(new ui::InterpolatedTranslation(
       gfx::Point(0, keyboard_height_), gfx::Point()));
 
   GetRootView()->SetTransform(
       transform_->Interpolate(animation_->GetCurrentValue()));
   animation_->Show();
 
   MoveToTop();
   Show();
+
+  bool visible = true;
+  NotificationService::current()->Notify(
+      NotificationType::KEYBOARD_VISIBILITY_CHANGED,
+      Source<KeyboardManager>(this),
+      Details<bool>(&visible));
 }
 
 void KeyboardManager::Hide() {
   animation_->Hide();
+
+  bool visible = false;
+  NotificationService::current()->Notify(
+      NotificationType::KEYBOARD_VISIBILITY_CHANGED,
+      Source<KeyboardManager>(this),
+      Details<bool>(&visible));
 }
 
 bool KeyboardManager::OnKeyEvent(const views::KeyEvent& event) {
   return target_ ? target_->OnKeyEvent(event) : false;
 }
 
 void KeyboardManager::AnimationProgressed(const ui::Animation* animation) {
   GetRootView()->SetTransform(
       transform_->Interpolate(animation_->GetCurrentValue()));
 }
@@ skipping 194 matching lines @@
 
     default:
       NOTREACHED();
   }
 }
 
 // static
 KeyboardManager* KeyboardManager::GetInstance() {
   return Singleton<KeyboardManager>::get();
 }