Cache accessibility description rather than returning temporary.

content/browser/accessibility/browser_accessibility_gtk.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 CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_GTK_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_GTK_H_
 #pragma once
 
 #include <atk/atk.h>
 
@@ skipping 53 matching lines @@
 class BrowserAccessibilityGtk : public BrowserAccessibility {
  public:
   BrowserAccessibilityGtk();
 
   virtual ~BrowserAccessibilityGtk();
 
   AtkObject* GetAtkObject() const;
 
   AtkRole atk_role() { return atk_role_; }
   const std::string& atk_acc_name() { return atk_acc_name_; }
+  const std::string& atk_acc_description() { return atk_acc_description_; }
 
   // BrowserAccessibility methods.
   virtual void PreInitialize() OVERRIDE;
   virtual bool IsNative() const OVERRIDE;
 
  private:
   virtual void InitRoleAndState();
 
   // Give BrowserAccessibility::Create access to our constructor.
   friend class BrowserAccessibility;
 
   AtkObject* atk_object_;
   AtkRole atk_role_;
   std::string atk_acc_name_;
+  std::string atk_acc_description_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityGtk);
 };
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_GTK_H_