Decouple Cache Storage messaging from Service Worker/Embedded Worker

content/renderer/service_worker/webserviceworkercachestorage_impl.h

Index: content/renderer/service_worker/webserviceworkercachestorage_impl.h
diff --git a/content/renderer/service_worker/webserviceworkercachestorage_impl.h b/content/renderer/service_worker/webserviceworkercachestorage_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..77fd8234b5f6553e04bb18dcc5e7ef815dc90c15
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+++ b/content/renderer/service_worker/webserviceworkercachestorage_impl.h
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+// Copyright 2015 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.
+
+#ifndef CONTENT_RENDERER_SERVICE_WORKER_WEB_SERVICE_WORKER_CACHE_STORAGE_IMPL_H_
+#define CONTENT_RENDERER_SERVICE_WORKER_WEB_SERVICE_WORKER_CACHE_STORAGE_IMPL_H_
+
+#include "content/child/thread_safe_sender.h"
+#include "third_party/WebKit/public/platform/WebServiceWorkerCache.h"
+#include "third_party/WebKit/public/platform/WebServiceWorkerCacheError.h"
+#include "third_party/WebKit/public/platform/WebServiceWorkerCacheStorage.h"
+#include "third_party/WebKit/public/platform/WebString.h"
+
+namespace content {
+
+class ServiceWorkerCacheStorageDispatcher;
+class ThreadSafeSender;
+
+// This corresponds to an instance of the script-facing CacheStorage object.
+// One exists per script execution context (window, worker) and has an origin
+// which provides a namespace for the caches. Script calls to the CacheStorage
+// object are routed through here to the (per-thread) dispatcher then on to
+// the browser, with the origin added to the call parameters. Cache instances
+// returned by open() calls are minted by and implemented within the code of
+// the CacheStorageDispatcher, and include routing information.
+class WebServiceWorkerCacheStorageImpl
+    : public blink::WebServiceWorkerCacheStorage {
+ public:
+  WebServiceWorkerCacheStorageImpl(ThreadSafeSender* thread_safe_sender,
+                                   const GURL& origin);
+  ~WebServiceWorkerCacheStorageImpl();
+
+  // From WebServiceWorkerCacheStorage:
+  virtual void dispatchHas(CacheStorageCallbacks* callbacks,
+                           const blink::WebString& cacheName);
+  virtual void dispatchOpen(CacheStorageWithCacheCallbacks* callbacks,
+                            const blink::WebString& cacheName);
+  virtual void dispatchDelete(CacheStorageCallbacks* callbacks,
+                              const blink::WebString& cacheName);
+  virtual void dispatchKeys(CacheStorageKeysCallbacks* callbacks);
+  virtual void dispatchMatch(
+      CacheStorageMatchCallbacks* callbacks,
+      const blink::WebServiceWorkerRequest& request,
+      const blink::WebServiceWorkerCache::QueryParams& query_params);
+
+ private:
+  // Helper to return the thread-specific dispatcher.
+  ServiceWorkerCacheStorageDispatcher* GetDispatcher() const;
+
+  scoped_refptr<ThreadSafeSender> thread_safe_sender_;
+  const GURL origin_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebServiceWorkerCacheStorageImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_SERVICE_WORKER_WEB_SERVICE_WORKER_CACHE_STORAGE_IMPL_H_