Adding Internals.numberOfLiveAXObjects to test for leaking AXObjects

Source/modules/accessibility/testing/InternalsAccessibility.h

Index: Source/modules/accessibility/testing/InternalsAccessibility.h
diff --git a/Source/modules/webaudio/testing/InternalsWebAudio.h b/Source/modules/accessibility/testing/InternalsAccessibility.h
similarity index 56%
copy from Source/modules/webaudio/testing/InternalsWebAudio.h
copy to Source/modules/accessibility/testing/InternalsAccessibility.h
index 9536a49d4e3c91189ded00bf8748a900e4100a60..1dec1e845a70e4004ad152cf78dfc8ad2180e0f4 100644
--- a/Source/modules/webaudio/testing/InternalsWebAudio.h
+++ b/Source/modules/accessibility/testing/InternalsAccessibility.h
@@ -2,18 +2,18 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef InternalsWebAudio_h
-#define InternalsWebAudio_h
+#ifndef InternalsAccessibility_h
+#define InternalsAccessibility_h
 
 namespace blink {
 
 class Internals;
 
-class InternalsWebAudio {
+class InternalsAccessibility {
 public:
-    static unsigned audioHandlerCount(Internals&);
+    static unsigned numberOfLiveAXObjects(Internals&);
 };
 
 } // namespace blink
 
-#endif // InternalsWebAudio_h
+#endif // InternalsAccessibility_h