Remove virtual keyboard support.

ui/base/ime/input_method_base.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 "ui/base/ime/input_method_base.h"
 
 #include "base/logging.h"
 #include "ui/base/ime/input_method_delegate.h"
 #include "ui/base/ime/text_input_client.h"
 
@@ skipping 35 matching lines @@
   OnDidChangeFocusedClient(old, client);
 }
 
 TextInputClient* InputMethodBase::GetTextInputClient() const {
   return system_toplevel_window_focused_ ? text_input_client_ : NULL;
 }
 
 void InputMethodBase::OnTextInputTypeChanged(const TextInputClient* client) {
   if (!IsTextInputClientFocused(client))
     return;
-  // TODO(yusukes): Support TextInputTypeTracker for USE_VIRTUAL_KEYBOARD.
 }
 
 TextInputType InputMethodBase::GetTextInputType() const {
   TextInputClient* client = GetTextInputClient();
   return client ? client->GetTextInputType() : TEXT_INPUT_TYPE_NONE;
 }
 
 bool InputMethodBase::CanComposeInline() const {
   TextInputClient* client = GetTextInputClient();
   return client ? client->CanComposeInline() : true;
@@ skipping 20 matching lines @@
 }
 
 void InputMethodBase::DispatchFabricatedKeyEventPostIME(EventType type,
                                                         KeyboardCode key_code,
                                                         int flags) const {
   if (delegate_)
     delegate_->DispatchFabricatedKeyEventPostIME(type, key_code, flags);
 }
 
 }  // namespace ui