aura: Remove event-dispatch methods from WindowTreeHostDelegate interface.

mojo/examples/launcher/launcher.cc

 // Copyright 2013 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 <stdio.h>
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 80 matching lines @@
       static_cast<ui::TranslatedKeyEvent*>(event)->ConvertToKeyEvent();
     } else {
       if (input_method_->DispatchKeyEvent(*event))
         event->StopPropagation();
     }
   }
 
   // ui::internal::InputMethodDelegate:
   virtual bool DispatchKeyEventPostIME(const ui::KeyEvent& event) OVERRIDE {
     ui::TranslatedKeyEvent aura_event(event);
-    return root_->GetDispatcher()->AsWindowTreeHostDelegate()->OnHostKeyEvent(
-        &aura_event);
+    ui::EventDispatchDetails details =
+        root_->GetDispatcher()->OnEventFromSource(&aura_event);
+    return aura_event.handled() || details.dispatcher_destroyed;
   }
 
   aura::Window* root_;
   scoped_ptr<ui::InputMethod> input_method_;
 
   DISALLOW_COPY_AND_ASSIGN(MinimalInputEventFilter);
 };
 
 class LauncherWindowTreeClient : public aura::client::WindowTreeClient {
  public:
@@ skipping 184 matching lines @@
   // TODO(beng): This crashes in a DCHECK on X11 because this thread's
   //             MessageLoop is not of TYPE_UI. I think we need a way to build
   //             Aura that doesn't define platform-specific stuff.
   aura::Env::CreateInstance();
   mojo::examples::LauncherImpl launcher(
       mojo::MakeScopedHandle(mojo::MessagePipeHandle(shell_handle)).Pass());
   loop.Run();
 
   return MOJO_RESULT_OK;
 }