IME for Mus: Send ack for key events after IME driver processes the event.

ui/views/mus/text_input_client_impl.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 "ui/views/mus/text_input_client_impl.h"
 
 #include "ui/base/ime/text_input_client.h"
 #include "ui/views/mus/input_method_mus.h"
 
 namespace views {
 
-TextInputClientImpl::TextInputClientImpl(ui::TextInputClient* text_input_client,
-                                         InputMethodMus* input_method)
-    : text_input_client_(text_input_client),
-      input_method_(input_method),
-      binding_(this) {}
+TextInputClientImpl::TextInputClientImpl(ui::TextInputClient* text_input_client)
+    : text_input_client_(text_input_client), binding_(this) {}
 
 TextInputClientImpl::~TextInputClientImpl() {}
 
 ui::mojom::TextInputClientPtr TextInputClientImpl::CreateInterfacePtrAndBind() {
   return binding_.CreateInterfacePtrAndBind();
 }
 
 void TextInputClientImpl::OnCompositionEvent(
     ui::mojom::CompositionEventPtr event) {
   switch (event->type) {
@@ skipping 12 matching lines @@
       break;
     case ui::mojom::CompositionEventType::UPDATE:
     case ui::mojom::CompositionEventType::INSERT_TEXT:
       // TODO(moshayedi): crbug.com/631524. Implement these types of composition
       // events once we have the necessary fields in ui.mojom.CompositionEvent.
       NOTIMPLEMENTED();
       break;
   }
 }
 
-void TextInputClientImpl::OnUnhandledEvent(
-    std::unique_ptr<ui::Event> key_event) {
-  DCHECK(key_event && key_event->IsKeyEvent());
-  input_method_->DispatchKeyEventPostIME(key_event->AsKeyEvent());
-}
-
 }  // namespace views