Views: Add new SetFocusBehavior method.

ui/app_list/views/custom_launcher_page_view.cc

 // Copyright 2015 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/custom_launcher_page_view.h"
 
 #include "ui/app_list/app_list_constants.h"
 #include "ui/views/layout/fill_layout.h"
 
 namespace app_list {
@@ skipping 22 matching lines @@
     case AppListModel::STATE_CUSTOM_LAUNCHER_PAGE:
       return onscreen_bounds;
     case AppListModel::STATE_START:
       return GetCollapsedLauncherPageBounds();
     default:
       return GetBelowContentsOffscreenBounds(onscreen_bounds.size());
   }
 }
 
 void CustomLauncherPageView::OnShown() {
-  custom_launcher_page_contents_->SetFocusable(true);
+  custom_launcher_page_contents_->SetFocusBehavior(FocusBehavior::ALWAYS);
 }
 
 void CustomLauncherPageView::OnWillBeHidden() {
-  custom_launcher_page_contents_->SetFocusable(false);
+  custom_launcher_page_contents_->SetFocusBehavior(FocusBehavior::NEVER);
 }
 
 }  // namespace app_list