diff -r 000000000000 -r 4f2f89ce4247 WebCore/accessibility/chromium/AXObjectCacheChromium.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/accessibility/chromium/AXObjectCacheChromium.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "AXObjectCache.h"
+#include "AccessibilityObject.h"
+#include "Chrome.h"
+#include "ChromeClientChromium.h"
+#include "FrameView.h"
+
+namespace WebCore {
+
+static ChromeClientChromium* toChromeClientChromium(FrameView* view)
+{
+    Page* page = view->frame() ? view->frame()->page() : 0;
+    if (!page)
+        return 0;
+
+    return static_cast<ChromeClientChromium*>(page->chrome()->client());
+}
+
+void AXObjectCache::detachWrapper(AccessibilityObject* obj)
+{
+    // In Chromium, AccessibilityObjects are wrapped lazily.
+    if (AccessibilityObjectWrapper* wrapper = obj->wrapper())
+        wrapper->detach();
+}
+
+void AXObjectCache::attachWrapper(AccessibilityObject*)
+{
+    // In Chromium, AccessibilityObjects are wrapped lazily.
+}
+
+void AXObjectCache::postPlatformNotification(AccessibilityObject* obj, AXNotification notification)
+{
+    if (notification != AXCheckedStateChanged)
+        return;
+
+    if (!obj || !obj->document() || !obj->documentFrameView())
+        return;
+
+    ChromeClientChromium* client = toChromeClientChromium(obj->documentFrameView());
+    if (client)
+        client->didChangeAccessibilityObjectState(obj);
+}
+
+void AXObjectCache::handleFocusedUIElementChanged(RenderObject*, RenderObject*)
+{
+}
+
+void AXObjectCache::handleScrolledToAnchor(const Node*)
+{
+}
+
+} // namespace WebCore