Revert of Refactor and move ash independent nested accelerator code to ui/wm/core

ash/accelerators/nested_dispatcher_controller.cc

Index: ash/accelerators/nested_dispatcher_controller.cc
diff --git a/ash/accelerators/nested_dispatcher_controller.cc b/ash/accelerators/nested_dispatcher_controller.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d963db07c81b9632e822a3bb221b1c6ddb7b24ef
--- /dev/null
+++ b/ash/accelerators/nested_dispatcher_controller.cc
@@ -0,0 +1,44 @@
+// 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 "ash/accelerators/nested_dispatcher_controller.h"
+
+#include "ash/accelerators/accelerator_dispatcher.h"
+#include "ash/shell.h"
+#include "base/auto_reset.h"
+#include "base/run_loop.h"
+
+namespace ash {
+
+NestedDispatcherController::NestedDispatcherController() {
+}
+
+NestedDispatcherController::~NestedDispatcherController() {
+}
+
+void NestedDispatcherController::RunWithDispatcher(
+    base::MessagePumpDispatcher* nested_dispatcher) {
+  base::MessageLoopForUI* loop = base::MessageLoopForUI::current();
+  base::MessageLoopForUI::ScopedNestableTaskAllower allow_nested(loop);
+
+  scoped_ptr<AcceleratorDispatcher> old_accelerator_dispatcher =
+      accelerator_dispatcher_.Pass();
+  accelerator_dispatcher_ = AcceleratorDispatcher::Create(nested_dispatcher);
+
+  // TODO(jbates) crbug.com/134753 Find quitters of this RunLoop and have them
+  //              use run_loop.QuitClosure().
+  scoped_ptr<base::RunLoop> run_loop = accelerator_dispatcher_->CreateRunLoop();
+  base::AutoReset<base::Closure> reset_closure(&quit_closure_,
+                                               run_loop->QuitClosure());
+  run_loop->Run();
+  accelerator_dispatcher_ = old_accelerator_dispatcher.Pass();
+}
+
+void NestedDispatcherController::QuitNestedMessageLoop() {
+  CHECK(!quit_closure_.is_null());
+  quit_closure_.Run();
+  accelerator_dispatcher_.reset();
+}
+
+}  // namespace ash