Fix build on the "Linux Clang (ChromeOS dbg)" bot.

content/browser/accessibility/browser_accessibility_manager.h

 // Copyright (c) 2011 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_MANAGER_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 12 matching lines @@
 using webkit_glue::WebAccessibility;
 
 struct ViewHostMsg_AccessibilityNotification_Params;
 
 // Class that can perform actions on behalf of the BrowserAccessibilityManager.
 class CONTENT_EXPORT BrowserAccessibilityDelegate {
  public:
   virtual ~BrowserAccessibilityDelegate() {}
   virtual void SetAccessibilityFocus(int acc_obj_id) = 0;
   virtual void AccessibilityDoDefaultAction(int acc_obj_id) = 0;
-  virtual bool HasFocus() = 0;
+  virtual bool HasFocus() const = 0;
   virtual gfx::Rect GetViewBounds() const = 0;
 };
 
 class CONTENT_EXPORT BrowserAccessibilityFactory {
  public:
   virtual ~BrowserAccessibilityFactory() {}
 
   // Create an instance of BrowserAccessibility and return a new
   // reference to it.
   virtual BrowserAccessibility* Create();
@@ skipping 118 matching lines @@
   // we use internally here.
   base::hash_map<int32, int32> renderer_id_to_child_id_map_;
 
   // A mapping from child IDs to BrowserAccessibility objects.
   base::hash_map<int32, BrowserAccessibility*> child_id_map_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager);
 };
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_