Make limitations for input.ime.sendKeyEvents API.

ui/base/ime/chromeos/mock_ime_input_context_handler.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 "ui/base/ime/chromeos/mock_ime_input_context_handler.h"
 
 #include "ui/base/ime/composition_text.h"
+#include "ui/base/ime/input_method.h"
 
 namespace chromeos {
 
 MockIMEInputContextHandler::MockIMEInputContextHandler()
     : commit_text_call_count_(0),
       update_preedit_text_call_count_(0),
       delete_surrounding_text_call_count_(0) {
 }
 
 MockIMEInputContextHandler::~MockIMEInputContextHandler() {
@@ skipping 23 matching lines @@
 
 void MockIMEInputContextHandler::Reset() {
   commit_text_call_count_ = 0;
   update_preedit_text_call_count_ = 0;
   delete_surrounding_text_call_count_ = 0;
   last_commit_text_.clear();
 }
 
 void MockIMEInputContextHandler::SendKeyEvent(ui::KeyEvent* event) {}
 
+ui::InputMethod* MockIMEInputContextHandler::GetInputMethod() {
+  return nullptr;
+}
 }  // namespace chromeos