Reset the app list when it is shown on Windows and Linux.

ui/app_list/views/apps_grid_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/apps_grid_view.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 
@@ skipping 349 matching lines @@
 
 void AppsGridView::SetLayout(int icon_size, int cols, int rows_per_page) {
   icon_size_.SetSize(icon_size, icon_size);
   cols_ = cols;
   rows_per_page_ = rows_per_page;
 
   SetBorder(views::Border::CreateEmptyBorder(
       kTopPadding, kLeftRightPadding, 0, kLeftRightPadding));
 }
 
+void AppsGridView::ResetForShowApps() {
+  activated_item_view_ = NULL;
+  layer()->SetOpacity(1.0f);
+  SetVisible(true);
+  // Set all views to visible in case they weren't made visible again by an
+  // incomplete animation.
+  for (int i = 0; i < view_model_.view_size(); ++i) {
+    view_model_.view_at(i)->SetVisible(true);
+  }
+}
+
 void AppsGridView::SetModel(AppListModel* model) {
   if (model_)
     model_->RemoveObserver(this);
 
   model_ = model;
   if (model_)
     model_->AddObserver(this);
 
   Update();
 }
@@ skipping 1701 matching lines @@
 void AppsGridView::SetAsFolderDroppingTarget(const Index& target_index,
                                              bool is_target_folder) {
   AppListItemView* target_view =
       static_cast<AppListItemView*>(
           GetViewAtSlotOnCurrentPage(target_index.slot));
   if (target_view)
     target_view->SetAsAttemptedFolderTarget(is_target_folder);
 }
 
 }  // namespace app_list