Remove remaining AX code.

sky/engine/public/web/WebFrameClient.h

Index: sky/engine/public/web/WebFrameClient.h
diff --git a/sky/engine/public/web/WebFrameClient.h b/sky/engine/public/web/WebFrameClient.h
index 693fc67f80d30276dad62e237107d7ce44bf5cb1..a17667171bff6132d1fd0fbd4213ea2a27087854 100644
--- a/sky/engine/public/web/WebFrameClient.h
+++ b/sky/engine/public/web/WebFrameClient.h
@@ -32,7 +32,6 @@
 #define WebFrameClient_h
 
 #include "../platform/WebColor.h"
-#include "WebAXObject.h"
 #include "WebFrame.h"
 #include "WebIconURL.h"
 #include "WebNavigationPolicy.h"
@@ -265,12 +264,6 @@ public:
     // Send initial drawing parameters to a child frame that is being rendered out of process.
     virtual void initializeChildFrame(const WebRect& frameRect, float scaleFactor) { }
 
-
-    // Accessibility -------------------------------------------------------
-
-    // Notifies embedder about an accessibility event.
-    virtual void postAccessibilityEvent(const WebAXObject&, WebAXEvent) { }
-
 protected:
     virtual ~WebFrameClient() { }
 };