Slider events with valuetext

content/browser/accessibility/browser_accessibility_com_win.h

 // Copyright (c) 2017 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_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_COM_WIN_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_COM_WIN_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <oleacc.h>
@@ skipping 839 matching lines @@
   // If not found they retrieve the global selection found on the current frame.
   int GetSelectionAnchor() const;
   int GetSelectionFocus() const;
   // Retrieves the selection offsets in the way required by the IA2 APIs.
   // selection_start and selection_end are -1 when there is no selection active
   // on this object.
   // The greatest of the two offsets is one past the last character of the
   // selection.)
   void GetSelectionOffsets(int* selection_start, int* selection_end) const;
 
-  // Get the value text, which might come from the floating-point
-  // value for some roles.
-  base::string16 GetValueText();
+  // Get the range value text, which might come from aria-valuetext or
+  // a floating-point value. This is different from the value string
+  // attribute used in input controls such as text boxes and combo boxes.
+  base::string16 GetRangeValueText();
+
+  // Return true for roles that support the value interface
+  bool IsRangeValueSupported();
 
   bool IsSameHypertextCharacter(size_t old_char_index, size_t new_char_index);
   void ComputeHypertextRemovedAndInserted(int* start,
                                           int* old_len,
                                           int* new_len);
 
   // If offset is a member of IA2TextSpecialOffsets this function updates the
   // value of offset and returns, otherwise offset remains unchanged.
   void HandleSpecialTextOffset(LONG* offset);
 
@@ skipping 107 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityComWin);
 };
 
 CONTENT_EXPORT BrowserAccessibilityComWin* ToBrowserAccessibilityComWin(
     BrowserAccessibility* obj);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_COM_WIN_H_