Expose Cache Storage API in global window/worker scope

Source/modules/modules.gypi

 {
   'includes': [
     '../core/core_generated.gypi',
     'modules_generated.gypi',
   ],
   'variables': {
     # Experimental hooks for embedder to provide extra IDL and source files.
     #
     # Note: this is not a supported API. If you rely on this, you will be broken
     # from time to time as the code generator changes in backward incompatible
@@ skipping 271 matching lines @@
       'performance/WorkerGlobalScopePerformance.idl',
       'plugins/NavigatorPlugins.idl',
       'presentation/NavigatorPresentation.idl',
       'push_messaging/ServiceWorkerGlobalScopePush.idl',
       'push_messaging/ServiceWorkerRegistrationPush.idl',
       'quota/NavigatorStorageQuota.idl',
       'quota/WindowQuota.idl',
       'quota/WorkerNavigatorStorageQuota.idl',
       'screen_orientation/ScreenScreenOrientation.idl',
       'serviceworkers/NavigatorServiceWorker.idl',
+      'serviceworkers/WindowCacheStorage.idl',
+      'serviceworkers/WorkerCacheStorage.idl',
       'speech/WindowSpeech.idl',
       'speech/WindowSpeechSynthesis.idl',
       'storage/WindowStorage.idl',
       'vibration/NavigatorVibration.idl',
       'vr/NavigatorVRDevice.idl',
       'webaudio/WindowWebAudio.idl',
       'webdatabase/WindowWebDatabase.idl',
       'webmidi/NavigatorWebMIDI.idl',
     ],
     # interfaces that inherit from Event
@@ skipping 739 matching lines @@
       'screen_orientation/ScreenOrientationDispatcher.cpp',
       'screen_orientation/ScreenOrientationDispatcher.h',
       'serviceworkers/Cache.cpp',
       'serviceworkers/Cache.h',
       'serviceworkers/CacheStorage.cpp',
       'serviceworkers/CacheStorage.h',
       'serviceworkers/ExtendableEvent.cpp',
       'serviceworkers/ExtendableEvent.h',
       'serviceworkers/FetchEvent.cpp',
       'serviceworkers/FetchEvent.h',
+      'serviceworkers/GlobalCacheStorage.cpp',
+      'serviceworkers/GlobalCacheStorage.h',
       'serviceworkers/InstallEvent.cpp',
       'serviceworkers/InstallEvent.h',
       'serviceworkers/InspectorServiceWorkerCacheAgent.cpp',
       'serviceworkers/InspectorServiceWorkerCacheAgent.h',
       'serviceworkers/NavigatorServiceWorker.cpp',
       'serviceworkers/NavigatorServiceWorker.h',
       'serviceworkers/RespondWithObserver.cpp',
       'serviceworkers/RespondWithObserver.h',
       'serviceworkers/ServiceWorker.cpp',
       'serviceworkers/ServiceWorker.h',
@@ skipping 312 matching lines @@
       'indexeddb/IDBKeyPathTest.cpp',
       'indexeddb/IDBRequestTest.cpp',
       'indexeddb/IDBTransactionTest.cpp',
       'serviceworkers/CacheTest.cpp',
       'serviceworkers/ServiceWorkerContainerTest.cpp',
       'websockets/DOMWebSocketTest.cpp',
       'websockets/DocumentWebSocketChannelTest.cpp',
     ],
   },
 }