Pass implementation object to supplemental classes by reference

Source/core/workers/WorkerGlobalScopeProxyProvider.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * 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 "WorkerGlobalScopeProxyProvider.h"
 
 namespace WebCore {
 
-WorkerGlobalScopeProxyProvider* WorkerGlobalScopeProxyProvider::from(Page* page)
+WorkerGlobalScopeProxyProvider* WorkerGlobalScopeProxyProvider::from(Page& page)
 {
     return static_cast<WorkerGlobalScopeProxyProvider*>(Supplement<Page>::from(page, supplementName()));
 }
 
 const char* WorkerGlobalScopeProxyProvider::supplementName()
 {
     return "WorkerGlobalScopeProxyProvider";
 }
 
-void provideWorkerGlobalScopeProxyProviderTo(Page* page, PassOwnPtr<WorkerGlobalScopeProxyProvider> provider)
+void provideWorkerGlobalScopeProxyProviderTo(Page& page, PassOwnPtr<WorkerGlobalScopeProxyProvider> provider)
 {
     Supplement<Page>::provideTo(page, WorkerGlobalScopeProxyProvider::supplementName(), provider);
 }
 
 } // namespace WebCore