[Aura] Polish app list.

ui/aura_shell/app_list.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 "ui/aura_shell/app_list.h"
 
 #include "base/bind.h"
 #include "ui/aura/event.h"
 #include "ui/aura/window.h"
 #include "ui/aura_shell/shell.h"
@@ skipping 44 matching lines @@
 void AppList::SetVisible(bool visible) {
   if (visible == is_visible_)
     return;
 
   is_visible_ = visible;
 
   if (widget_) {
     ScheduleAnimation();
   } else if (is_visible_ && !set_widget_factory_.HasWeakPtrs()) {
     Shell::GetInstance()->delegate()->RequestAppListWidget(
+        GetPreferredBounds(false),
         base::Bind(&AppList::SetWidget, set_widget_factory_.GetWeakPtr()));
   }
 }
 
 bool AppList::IsVisible() {
   return widget_ && widget_->IsVisible();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // AppList, private:
 
 void AppList::SetWidget(views::Widget* widget) {
   DCHECK(widget_ == NULL);
   set_widget_factory_.InvalidateWeakPtrs();
 
   if (is_visible_) {
     widget_ = widget;
     widget_->AddObserver(this);
     GetLayer(widget_)->GetAnimator()->AddObserver(this);
     Shell::GetInstance()->AddDesktopEventFilter(this);
 
     widget_->SetBounds(GetPreferredBounds(false));
     widget_->SetOpacity(0);
     ScheduleAnimation();
 
     widget_->Show();
-    widget_->Activate();
   } else {
     widget->Close();
   }
 }
 
 void AppList::ResetWidget() {
   if (!widget_)
     return;
 
   widget_->RemoveObserver(this);
@@ skipping 53 matching lines @@
 
 void AppList::OnLayerAnimationScheduled(
     const ui::LayerAnimationSequence* sequence) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // AppList, views::Widget::Observer implementation:
 
 void AppList::OnWidgetClosing(views::Widget* widget) {
   DCHECK(widget_ == widget);
+  if (is_visible_)
+    SetVisible(false);
   ResetWidget();
 }
 
 void AppList::OnWidgetActivationChanged(views::Widget* widget, bool active) {
   DCHECK(widget_ == widget);
   if (widget_ && is_visible_ && !active)
     SetVisible(false);
 }
 
 }  // namespace internal
 }  // namespace aura_shell