Cleanup after removing views-mus code

chrome/browser/ui/views/frame/immersive_context_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 "chrome/browser/ui/views/frame/immersive_context_mus.h"
 
 #include "ui/aura/client/capture_client.h"
 #include "ui/views/mus/mus_client.h"
-#include "ui/views/mus/pointer_watcher_event_router2.h"
+#include "ui/views/mus/pointer_watcher_event_router.h"
 #include "ui/views/pointer_watcher.h"
 
 ImmersiveContextMus::ImmersiveContextMus(
     aura::client::CaptureClient* capture_client)
     : capture_client_(capture_client) {}
 
 ImmersiveContextMus::~ImmersiveContextMus() {}
 
 void ImmersiveContextMus::InstallResizeHandleWindowTargeter(
     ash::ImmersiveFullscreenController* controller) {
@@ skipping 30 matching lines @@
 
 bool ImmersiveContextMus::DoesAnyWindowHaveCapture() {
   return capture_client_->GetGlobalCaptureWindow() != nullptr;
 }
 
 bool ImmersiveContextMus::IsMouseEventsEnabled() {
   // TODO: http://crbug.com/640374.
   NOTIMPLEMENTED();
   return true;
 }