Fix the bug that virtual keyboard window doesn't work.

chrome/browser/ui/ash/ash_keyboard_controller_proxy.cc

 // Copyright (c) 2013 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/ash/ash_keyboard_controller_proxy.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/shell.h"
 #include "chrome/browser/extensions/event_names.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
@@ skipping 155 matching lines @@
   {
     // Scope the following animation settings as we don't want to animate
     // visibility change that triggered by a call to the base class function
     // ShowKeyboardContainer with these settings. The container should become
     // visible immediately.
     ui::ScopedLayerAnimationSettings settings(container_animator);
     settings.SetTweenType(gfx::Tween::EASE_IN);
     settings.SetTransitionDuration(
         base::TimeDelta::FromMilliseconds(kAnimationDurationMs));
     container->SetTransform(gfx::Transform());
-    container->layer()->SetOpacity(1.0);
   }
 
   // TODO(bshe): Add animation observer and do the workspace resizing after
   // animation finished.
   KeyboardControllerProxy::ShowKeyboardContainer(container);
   // GetTextInputClient may return NULL when keyboard-usability-experiment flag
   // is set.
   if (GetInputMethod()->GetTextInputClient()) {
     gfx::Rect showing_area =
         ash::DisplayController::GetPrimaryDisplay().work_area();
     GetInputMethod()->GetTextInputClient()->EnsureCaretInRect(showing_area);
   }
 }
 
 void AshKeyboardControllerProxy::HideKeyboardContainer(
     aura::Window* container) {
   // The following animation settings should persist within this function scope.
   // Otherwise, a call to base class function HideKeyboardContainer will hide
   // the container immediately.
   ui::ScopedLayerAnimationSettings
       settings(container->layer()->GetAnimator());
   settings.SetTweenType(gfx::Tween::EASE_OUT);
   settings.SetTransitionDuration(
       base::TimeDelta::FromMilliseconds(kAnimationDurationMs));
   gfx::Transform transform;
   transform.Translate(0, GetKeyboardWindow()->bounds().height());
   container->SetTransform(transform);
-  container->layer()->SetOpacity(0.0);
   KeyboardControllerProxy::HideKeyboardContainer(container);
 }
 
 void AshKeyboardControllerProxy::SetUpdateInputType(ui::TextInputType type) {
   // TODO(bshe): Need to check the affected window's profile once multi-profile
   // is supported.
   content::BrowserContext* context = GetBrowserContext();
   extensions::EventRouter* router =
       extensions::ExtensionSystem::GetForBrowserContext(context)->
       event_router();
 
   if (!router->HasEventListener(
           virtual_keyboard_private::OnTextInputBoxFocused::kEventName)) {
     return;
   }
 
   scoped_ptr<base::ListValue> event_args(new base::ListValue());
   scoped_ptr<base::DictionaryValue> input_context(new base::DictionaryValue());
   input_context->SetString("type",
       Context::ToString(TextInputTypeToGeneratedInputTypeEnum(type)));
   event_args->Append(input_context.release());
 
   scoped_ptr<extensions::Event> event(new extensions::Event(
       virtual_keyboard_private::OnTextInputBoxFocused::kEventName,
       event_args.Pass()));
   event->restrict_to_browser_context = context;
   router->DispatchEventToExtension(kVirtualKeyboardExtensionID, event.Pass());
 }