[WIP Approach 1] Straighten up input method reactivation

content/common/text_input_state.h

 // 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.
 
 #ifndef CONTENT_COMMON_TEXT_INPUT_STATE_H_
 #define CONTENT_COMMON_TEXT_INPUT_STATE_H_
 
 #include <string>
 
 #include "content/common/content_export.h"
@@ skipping 42 matching lines @@
   // true, the IME will only be shown if the input is appropriate (e.g. not
   // TEXT_INPUT_TYPE_NONE).
   bool show_ime_if_needed;
 
   // Whether this change is originated from non-IME (e.g., Javascript,
   // Autofill).
   bool is_non_ime_change;
 
   // Whether we are in a batch edit.
   bool batch_edit;
+
+  // Whether ACK is required.
+  bool requires_ack;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_TEXT_INPUT_STATE_H_