Hide IME autocompletion when Omnibox popup closes.

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm

 // 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 "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/string_util.h"
@@ skipping 496 matching lines @@
   DCHECK_LE(user_text_length, display_text.size());
   const NSRange range =
       NSMakeRange(user_text_length, display_text.size() - user_text_length);
   SetTextAndSelectedRange(display_text, range);
   model()->OnChanged();
   [field_ clearUndoChain];
 
   return true;
 }
 
+void OmniboxViewMac::OnInlineAutocompleteTextCleared() {
+}
+
 void OmniboxViewMac::OnRevertTemporaryText() {
   SetSelectedRange(saved_temporary_selection_);
   // We got here because the user hit the Escape key. We explicitly don't call
   // TextChanged(), since OmniboxPopupModel::ResetToDefaultMatch() has already
   // been called by now, and it would've called TextChanged() if it was
   // warranted.
 }
 
 bool OmniboxViewMac::IsFirstResponder() const {
   return [field_ currentEditor] != nil ? true : false;
@@ skipping 413 matching lines @@
 
 NSUInteger OmniboxViewMac::GetTextLength() const {
   return [field_ currentEditor] ?  [[[field_ currentEditor] string] length] :
                                    [[field_ stringValue] length];
 }
 
 bool OmniboxViewMac::IsCaretAtEnd() const {
   const NSRange selection = GetSelectedRange();
   return NSMaxRange(selection) == GetTextLength();
 }