Introducing the ServiceWorker Cache object.

Source/modules/serviceworkers/CacheStorage.cpp

Index: Source/modules/serviceworkers/CacheStorage.cpp
diff --git a/Source/modules/serviceworkers/CacheStorage.cpp b/Source/modules/serviceworkers/CacheStorage.cpp
index f734d13ee545ba21ded6f4c528c9ebec56f6ae14..0c5bca5f0efc90cb7ae76bfdb829c04df3fdec81 100644
--- a/Source/modules/serviceworkers/CacheStorage.cpp
+++ b/Source/modules/serviceworkers/CacheStorage.cpp
@@ -7,6 +7,7 @@
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
+#include "modules/serviceworkers/Cache.h"
 #include "public/platform/WebServiceWorkerCacheError.h"
 #include "public/platform/WebServiceWorkerCacheStorage.h"
 
@@ -58,9 +59,7 @@ public:
 
     virtual void onSuccess(WebServiceWorkerCache* cache) OVERRIDE
     {
-        // FIXME: There should be a blink side of the Cache object implementation here, rather than
-        // this nonsensical return.
-        m_resolver->resolve("succesfully returned a cache");
+        m_resolver->resolve(Cache::fromWebServiceWorkerCache(cache));
     }
 
     virtual void onError(WebServiceWorkerCacheError* reason) OVERRIDE