ash/wm: Remove dead code.

ui/wm/core/nested_accelerator_dispatcher.cc

Index: ui/wm/core/nested_accelerator_dispatcher.cc
diff --git a/ui/wm/core/nested_accelerator_dispatcher.cc b/ui/wm/core/nested_accelerator_dispatcher.cc
deleted file mode 100644
index d37c93c796f5ba7f10812b1c88454600f51de1f0..0000000000000000000000000000000000000000
--- a/ui/wm/core/nested_accelerator_dispatcher.cc
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2014 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/wm/core/nested_accelerator_dispatcher.h"
-
-#include "base/logging.h"
-#include "ui/wm/core/nested_accelerator_delegate.h"
-
-namespace wm {
-
-NestedAcceleratorDispatcher::NestedAcceleratorDispatcher(
-    NestedAcceleratorDelegate* delegate)
-    : delegate_(delegate) {
-  DCHECK(delegate);
-}
-
-NestedAcceleratorDispatcher::~NestedAcceleratorDispatcher() {
-}
-
-}  // namespace wm