Add chrome.input.ime.activate and chrome.input.ime.deactivate API

chrome/browser/ui/input_method/input_method_engine.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 "chrome/browser/ui/input_method/input_method_engine.h"
+
+namespace input_method {
+
+InputMethodEngine::InputMethodEngine() {}
+
+InputMethodEngine::~InputMethodEngine() {}
+
+bool InputMethodEngine::SendKeyEvents(
+    int context_id,
+    const std::vector<KeyboardEvent>& events) {
+  // TODO(azurewei) Implement SendKeyEvents funciton
+  return false;
+}
+
+bool InputMethodEngine::IsActive() const {
+  return true;
+}
+
+std::string InputMethodEngine::GetExtensionId() const {
+  return extension_id_;
+}
+
+}  // namespace input_method