Clean up accessibility enums for use in Chromium.

public/web/WebViewClient.h

Index: public/web/WebViewClient.h
diff --git a/public/web/WebViewClient.h b/public/web/WebViewClient.h
index 43c85f324d3105f32a34577dbb85a0c85a098137..34c5bc89cb3984a3e63e9c18462a0909d2506dd4 100644
--- a/public/web/WebViewClient.h
+++ b/public/web/WebViewClient.h
@@ -34,6 +34,7 @@
 #include "../platform/WebColor.h"
 #include "../platform/WebGraphicsContext3D.h"
 #include "../platform/WebString.h"
+#include "WebAXTypes.h"
 #include "WebAccessibilityNotification.h"
 #include "WebContentDetectionResult.h"
 #include "WebDragOperation.h"
@@ -311,9 +312,11 @@ public:
 
     // Accessibility -------------------------------------------------------
 
-    // Notifies embedder about an accessibility notification.
-    virtual void postAccessibilityNotification(const WebAccessibilityObject&, WebAccessibilityNotification) { }
+    // Notifies embedder about an accessibility event.
+    virtual void postAccessibilityEvent(const WebAccessibilityObject&, WebAXTypes::Event) { }
 
+    // Deprecated.
+    virtual void postAccessibilityNotification(const WebAccessibilityObject&, WebAccessibilityNotification) { }
 
     // Developer tools -----------------------------------------------------