Add Hide and Show to the app list SearchBoxView.

ui/app_list/views/search_box_view.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/app_list/views/search_box_view.h"
 
 #include <algorithm>
 
 #include "grit/ui_resources.h"
 #include "ui/app_list/app_list_model.h"
@@ skipping 90 matching lines @@
   // Updates model and fires query changed manually because SetText() above
   // does not generate ContentsChanged() notification.
   UpdateModel();
   NotifyQueryChanged();
 }
 
 void SearchBoxView::InvalidateMenu() {
   menu_.reset();
 }
 
+void SearchBoxView::Show() {
+  SetVisible(true);
+  delegate_->SearchBoxVisibilityChanged(this);
+}
+
+void SearchBoxView::Hide() {
+  SetVisible(false);
+  delegate_->SearchBoxVisibilityChanged(this);
+}
+
 gfx::Size SearchBoxView::GetPreferredSize() {
   return gfx::Size(kPreferredWidth, kPreferredHeight);
 }
 
 void SearchBoxView::Layout() {
   gfx::Rect rect(GetContentsBounds());
   if (rect.IsEmpty())
     return;
 
   gfx::Rect icon_frame(rect);
@@ skipping 132 matching lines @@
   NotifyQueryChanged();
 }
 
 void SearchBoxView::OnSpeechRecognitionStateChanged(
     SpeechRecognitionState new_state) {
   SpeechRecognitionButtonPropChanged();
   SchedulePaint();
 }
 
 }  // namespace app_list