Introducing the WebServiceWorkerCacheStorage

Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h

Index: Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h
diff --git a/Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h b/Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h
index 36490b660604644127c93e8d5a1d9c866435476d..c61aa8c2d9becd99e33dc4f9c5594861e1f43ffa 100644
--- a/Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h
+++ b/Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h
@@ -41,6 +41,7 @@
 #include "wtf/Noncopyable.h"
 
 namespace blink {
+class WebServiceWorkerCacheStorage;
 class WebURL;
 };
 
@@ -57,6 +58,7 @@ public:
 
     virtual void getClients(blink::WebServiceWorkerClientsCallbacks*) = 0;
     virtual blink::WebURL scope() const = 0;
+    virtual blink::WebServiceWorkerCacheStorage* cacheStorage() const = 0;
 
     virtual void didHandleActivateEvent(int eventID, blink::WebServiceWorkerEventResult) = 0;
     virtual void didHandleInstallEvent(int installEventID, blink::WebServiceWorkerEventResult) = 0;