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 8094b55ce8e14617b73218072b4ad49b1bef6359..3604bb40ae611aee230d5982f18916191d25425a 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