Include Page.h in fewer headers

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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * 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 "core/workers/WorkerGlobalScopeProxyProvider.h"
 
+#include "core/page/Page.h"
+
 namespace WebCore {
 
 WorkerGlobalScopeProxyProvider* WorkerGlobalScopeProxyProvider::from(Page& page)
 {
     return static_cast<WorkerGlobalScopeProxyProvider*>(WillBeHeapSupplement<Page>::from(page, supplementName()));
 }
 
 const char* WorkerGlobalScopeProxyProvider::supplementName()
 {
     return "WorkerGlobalScopeProxyProvider";
 }
 
 void provideWorkerGlobalScopeProxyProviderTo(Page& page, PassOwnPtrWillBeRawPtr<WorkerGlobalScopeProxyProvider> provider)
 {
     WillBeHeapSupplement<Page>::provideTo(page, WorkerGlobalScopeProxyProvider::supplementName(), provider);
 }
 
 } // namespace WebCore