Work in progress: Adds MessagePumpDispatcher::ShouldExit(). This is used to handle the

ash/accelerators/nested_dispatcher_controller_unittest.cc

 // 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/accelerator_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "base/bind.h"
@@ skipping 22 matching lines @@
   }
 
   int num_key_events_dispatched() { return num_key_events_dispatched_; }
 
 #if defined(OS_WIN) || defined(USE_X11)
   virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE {
     if (ui::EventTypeFromNative(event) == ui::ET_KEY_RELEASED)
       num_key_events_dispatched_++;
     return !ui::IsNoopEvent(event);
   }
+  virtual bool ShouldExit() OVERRIDE {
+    return false;
+  }
 #endif  //  defined(OS_WIN) || defined(USE_X11)
 
  private:
   int num_key_events_dispatched_;
 };
 
 class TestTarget : public ui::AcceleratorTarget {
  public:
   TestTarget() : accelerator_pressed_count_(0) {
   }
@@ skipping 108 matching lines @@
   aura::client::GetDispatcherClient(root_window)->RunWithDispatcher(
       &inner_dispatcher,
       root_window,
       true /* nestable_tasks_allowed */);
   EXPECT_EQ(0, inner_dispatcher.num_key_events_dispatched());
   EXPECT_EQ(1, target.accelerator_pressed_count());
 }
 
 } //  namespace test
 } //  namespace ash