Forward BrowserAccessibilityWin::get_accHelp to the platform node.

content/browser/accessibility/browser_accessibility_win.cc

 // 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.
 
 #include "content/browser/accessibility/browser_accessibility_win.h"
 
 #include <UIAutomationClient.h>
 #include <UIAutomationCoreApi.h>
 
 #include <algorithm>
@@ skipping 610 matching lines @@
   }
 
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accHelp(VARIANT var_id, BSTR* help) {
   WIN_ACCESSIBILITY_API_HISTOGRAM(UMA_API_GET_ACC_HELP);
   if (!instance_active())
     return E_FAIL;
 
-  if (!help)
-    return E_INVALIDARG;
-
-  return S_FALSE;
+  return GetPlatformNodeWin()->get_accHelp(var_id, help);
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accKeyboardShortcut(VARIANT var_id,
                                                               BSTR* acc_key) {
   WIN_ACCESSIBILITY_API_HISTOGRAM(UMA_API_GET_ACC_KEYBOARD_SHORTCUT);
   if (!instance_active())
     return E_FAIL;
 
   if (!acc_key)
     return E_INVALIDARG;
@@ skipping 5027 matching lines @@
   return static_cast<BrowserAccessibilityWin*>(obj);
 }
 
 const BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(const BrowserAccessibility* obj) {
   DCHECK(!obj || obj->IsNative());
   return static_cast<const BrowserAccessibilityWin*>(obj);
 }
 
 }  // namespace content