Hide autocomplete popup when IME candidate window is open (on Windows).

chrome/browser/ui/omnibox/omnibox_view.h

 // Copyright (c) 2011 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.
 
 // This file defines the interface class OmniboxView.  Each toolkit will
 // implement the edit view differently, so that code is inherently platform
 // specific.  However, the AutocompleteEditModel needs to do some communication
 // with the view.  Since the model is shared between platforms, we need to
 // define an interface that all view implementations will share.
 
@@ skipping 164 matching lines @@
   // Returns the current instant suggestion text.
   virtual string16 GetInstantSuggestion() const = 0;
 
   // Returns the width in pixels needed to display the current text. The
   // returned value includes margins.
   virtual int TextWidth() const = 0;
 
   // Returns true if the user is composing something in an IME.
   virtual bool IsImeComposing() const = 0;
 
+  // Returns true if the autocomplete popup should not be shown, for example,
+  // because the IME candidate window is open.
+  virtual bool ShouldHideAutocompletePopup() const;
+
 #if defined(TOOLKIT_VIEWS)
   // Adds the autocomplete edit view to view hierarchy and
   // returns the views::View of the edit view.
   virtual views::View* AddToView(views::View* parent) = 0;
 
   // Performs the drop of a drag and drop operation on the view.
   virtual int OnPerformDrop(const views::DropTargetEvent& event) = 0;
 #endif
 
   // Returns a string with any leading javascript schemas stripped from the
   // input text.
   static string16 StripJavascriptSchemas(const string16& text);
 
   virtual ~OmniboxView() {}
 };
 
 #endif  // CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_VIEW_H_