Simplify SharedWorkerRepository code

public/web/WebSharedWorkerRepositoryClient.h

 /*
- * Copyright (C) 2009 Google Inc. All rights reserved.
+ * 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
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * 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.
  */
 
-#ifndef WebSharedWorkerRepository_h
-#define WebSharedWorkerRepository_h
-
-#include "../platform/WebCommon.h"
+#ifndef WebSharedWorkerRepositoryClient_h
+#define WebSharedWorkerRepositoryClient_h
 
 namespace WebKit {
 
 class WebString;
 class WebSharedWorker;
 class WebURL;
 
-class WebSharedWorkerRepository {
+class WebSharedWorkerRepositoryClient {
 public:
     // Unique identifier for the parent document of a worker (unique within a given process).
     typedef unsigned long long DocumentID;
 
-    // Tracks a newly-created SharedWorker via the repository.
-    virtual void addSharedWorker(WebSharedWorker*, DocumentID) = 0;
+    // Creates a new shared worker. This may return null.
+    virtual WebSharedWorker* createSharedWorker(const WebURL&, const WebString&, DocumentID) { return 0; }
 
     // Invoked when a document has been detached. DocumentID can be re-used after documentDetached() is invoked.
-    virtual void documentDetached(DocumentID) = 0;
-
-    // Returns true if the passed document is associated with any SharedWorkers.
-    virtual bool hasSharedWorkers(DocumentID) = 0;
+    virtual void documentDetached(DocumentID) { }
 };
 
-// Initializes shared worker support.
-BLINK_EXPORT void setSharedWorkerRepository(WebSharedWorkerRepository*);
-
 } // namespace WebKit
 
-#endif // WebSharedWorkerRepository_h
+#endif // WebSharedWorkerRepositoryClient_h