Implement put_accvalue for textfields and location bar.

ui/views/accessibility/native_view_accessibility_win.h

 // 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.
 
 #ifndef UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_WIN_H_
 #define UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_WIN_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <oleacc.h>
@@ skipping 96 matching lines @@
 
   // Retrieves the IDispatch interface of the object's parent.
   STDMETHODIMP get_accParent(IDispatch** disp_parent);
 
   // Retrieves information describing the role of the specified object.
   STDMETHODIMP get_accRole(VARIANT var_id, VARIANT* role);
 
   // Retrieves the current state of the specified object.
   STDMETHODIMP get_accState(VARIANT var_id, VARIANT* state);
 
-  // Retrieves the current value associated with the specified object.
+  // Retrieve or set the string value associated with the specified object.
+  // Setting the value is not typically used by screen readers, but it's
+  // used frequently by automation software.
   STDMETHODIMP get_accValue(VARIANT var_id, BSTR* value);
-
-  // Non-supported IAccessible methods.
+  STDMETHODIMP put_accValue(VARIANT var_id, BSTR new_value);
 
   // Selections not applicable to views.
   STDMETHODIMP get_accSelection(VARIANT* selected);
   STDMETHODIMP accSelect(LONG flags_sel, VARIANT var_id);
 
   // Help functions not supported.
   STDMETHODIMP get_accHelp(VARIANT var_id, BSTR* help);
   STDMETHODIMP get_accHelpTopic(BSTR* help_file,
                                 VARIANT var_id,
                                 LONG* topic_id);
 
   // Deprecated functions, not implemented here.
   STDMETHODIMP put_accName(VARIANT var_id, BSTR put_name);
-  STDMETHODIMP put_accValue(VARIANT var_id, BSTR put_val);
 
   //
   // IAccessible2
   //
 
   STDMETHODIMP role(LONG* role);
 
   STDMETHODIMP get_states(AccessibleStates* states);
 
   STDMETHODIMP get_uniqueID(LONG* unique_id);
@@ skipping 266 matching lines @@
 
   // Next index into |view_storage_ids_| to use.
   static int next_view_storage_id_index_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewAccessibilityWin);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_WIN_H_