Cache Storage: Add Platform API to retrieve CacheStorage for origin

Source/modules/serviceworkers/CacheStorage.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/serviceworkers/CacheStorage.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
@@ skipping 156 matching lines @@
         m_resolver->reject(Cache::domExceptionForCacheError(*reason));
         m_resolver.clear();
     }
 
 private:
     RefPtrWillBePersistent<ScriptPromiseResolver> m_resolver;
 };
 
 CacheStorage* CacheStorage::create(WebServiceWorkerCacheStorage* webCacheStorage)
 {
-    return new CacheStorage(webCacheStorage);
+    return new CacheStorage(adoptPtr(webCacheStorage));
 }
 
 ScriptPromise CacheStorage::open(ScriptState* scriptState, const String& cacheName)
 {
     RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
     const ScriptPromise promise = resolver->promise();
 
     if (m_nameToCacheMap.contains(cacheName)) {
         Cache* cache = m_nameToCacheMap.find(cacheName)->value;
         resolver->resolve(cache);
@@ skipping 78 matching lines @@
         resolver->reject(createNoImplementationException());
 
     return promise;
 }
 
 DEFINE_TRACE(CacheStorage)
 {
     visitor->trace(m_nameToCacheMap);
 }
 
-CacheStorage::CacheStorage(WebServiceWorkerCacheStorage* webCacheStorage)
+CacheStorage::CacheStorage(PassOwnPtr<WebServiceWorkerCacheStorage> webCacheStorage)
     : m_webCacheStorage(webCacheStorage)
 {
 }
 
 } // namespace blink