Improve omnibox accessibility 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 91 matching lines @@
   // Returns true if all text is selected or there is no text at all.
   virtual bool IsSelectAll() = 0;
 
   // Returns true if the user deleted the suggested text.
   virtual bool DeleteAtEndPressed() = 0;
 
   // Fills |start| and |end| with the indexes of the current selection's bounds.
   // It is not guaranteed that |*start < *end|, as the selection can be
   // directed.  If there is no selection, |start| and |end| will both be equal
   // to the current cursor position.
-  virtual void GetSelectionBounds(size_t* start, size_t* end) = 0;
+  virtual void GetSelectionBounds(size_t* start, size_t* end) const = 0;
 
   // Selects all the text in the edit.  Use this in place of SetSelAll() to
   // avoid selecting the "phantom newline" at the end of the edit.
   virtual void SelectAll(bool reversed) = 0;
 
   // Reverts the edit and popup back to their unedited state (permanent text
   // showing, popup closed, no user input in progress).
   virtual void RevertAll() = 0;
 
   // Updates the autocomplete popup and other state after the text has been
@@ skipping 69 matching lines @@
 #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_