Fix issue 21587, a regression of CL 196020....

chrome/browser/autocomplete/autocomplete_edit_view_gtk.h

 // Copyright (c) 2009 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 CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <string>
@@ skipping 390 matching lines @@
   //
   // It's only used in the key press handler to detect a Tab key press event
   // during sync dispatch of "move-focus" signal.
   bool tab_was_pressed_;
 
   // Indicates that user requested to paste clipboard.
   // The actual paste clipboard action might be performed later if the
   // clipboard is not empty.
   bool paste_clipboard_requested_;
 
-  // If a character is inserted, store it in this variable so that it can
-  // be used later in "key-press-event" signal handler to determine if a Tab or
-  // Enter key event is handled by IME or not.
-  char char_inserted_;
+  // Indicates if an Enter key press is inserted as text.
+  // It's used in the key press handler to determine if an Enter key event is
+  // handled by IME or not.
+  bool enter_was_inserted_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewGtk);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_