Adds WmShell::IsTouchDown()

ash/mus/bridge/wm_shell_mus.cc

 // Copyright 2016 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 "ash/mus/bridge/wm_shell_mus.h"
 
 #include <utility>
 
 #include "ash/common/accelerators/accelerator_controller.h"
 #include "ash/common/display/display_info.h"
@@ skipping 318 matching lines @@
 
 void WmShellMus::AddPointerWatcher(views::PointerWatcher* watcher) {
   // TODO(jamescook): Move PointerWatcherDelegateMus to //ash/mus and use here.
   NOTIMPLEMENTED();
 }
 
 void WmShellMus::RemovePointerWatcher(views::PointerWatcher* watcher) {
   NOTIMPLEMENTED();
 }
 
+bool WmShellMus::IsTouchDown() {
+  // TODO: implement me, http://crbug.com/634967.
+  NOTIMPLEMENTED();
+  return false;
+}
+
 #if defined(OS_CHROMEOS)
 void WmShellMus::ToggleIgnoreExternalKeyboard() {
   NOTIMPLEMENTED();
 }
 #endif  // defined(OS_CHROMEOS)
 
 ui::WindowTreeClient* WmShellMus::window_tree_client() {
   return window_manager_->window_tree_client();
 }
 
@@ skipping 18 matching lines @@
                     OnWindowActivated(gained_active, lost_active));
 }
 
 void WmShellMus::OnDidDestroyClient(ui::WindowTreeClient* client) {
   DCHECK_EQ(window_tree_client(), client);
   client->RemoveObserver(this);
 }
 
 }  // namespace mus
 }  // namespace ash