Pass implementation object to supplemental classes by reference

Source/core/testing/v8/WebCoreTestSupport.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * 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
@@ skipping 41 matching lines @@
 {
     // This can happen if JavaScript is disabled in the main frame.
     if (context.IsEmpty())
         return;
 
     v8::Context::Scope contextScope(context);
     v8::HandleScope scope(context->GetIsolate());
 
     ExecutionContext* scriptContext = currentExecutionContext(context->GetIsolate());
     Page* page = toDocument(scriptContext)->frame()->page();
+    ASSERT(page);
     Internals::resetToConsistentState(page);
-    InternalSettings::from(page)->resetToConsistentState();
+    InternalSettings::from(*page)->resetToConsistentState();
 }
 
 }