Add basic support for accessibility hit testing within web contents....

chrome/browser/accessibility/browser_accessibility_win.h

 // Copyright (c) 2010 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_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_
 #define CHROME_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlcom.h>
@@ skipping 439 matching lines @@
   // should be performed on a particular child ID, rather than this object.
   // This method tries to figure out the target object from |var_id| and
   // returns a pointer to the target object if it exists, otherwise NULL.
   // Does not return a new reference.
   BrowserAccessibilityWin* GetTargetFromChildID(const VARIANT& var_id);
 
   // Initialize the role and state metadata from the role enum and state
   // bitmasks defined in webkit/glue/webaccessibility.h.
   void InitRoleAndState();
 
-  // Return true if this attribute is in the attributes map.
-  bool HasAttribute(WebAccessibility::Attribute attribute);
-
-  // Retrieve the string value of an attribute from the attribute map and
-  // returns true if found.
-  bool GetAttribute(WebAccessibility::Attribute attribute, string16* value);
-
   // Retrieve the string value of an attribute from the attribute map and
   // if found and nonempty, allocate a new BSTR (with SysAllocString)
   // and return S_OK. If not found or empty, return S_FALSE.
   HRESULT GetAttributeAsBstr(
       WebAccessibility::Attribute attribute, BSTR* value_bstr);
 
-  // Retrieve the value of an attribute from the attribute map and
-  // if found and nonempty, try to convert it to an integer.
-  // Returns true only if both the attribute was found and it was successfully
-  // converted to an integer.
-  bool GetAttributeAsInt(
-      WebAccessibility::Attribute attribute, int* value_int);
-
   // Escape a string like it would be escaped for a URL or HTML form.
   string16 Escape(string16 str);
 
   // Get the text of this node for the purposes of IAccessibleText - it may
   // be the name, it may be the value, etc. depending on the role.
   const string16& TextForIAccessibleText();
 
   // Search forwards (direction == 1) or backwards (direction == -1) from
   // the given offset until the given IAccessible2 boundary (like word,
   // sentence) is found, and return its offset.
@@ skipping 17 matching lines @@
   int32 ia2_role_;
   int32 ia2_state_;
 
   // Give BrowserAccessibility::Create access to our constructor.
   friend class BrowserAccessibility;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityWin);
 };
 
 #endif  // CHROME_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_