Implement Permissions.query() and static PermissionStatus.

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 853 matching lines @@
       'notifications/NotificationPermissionClient.cpp',
       'notifications/NotificationPermissionClient.h',
       'notifications/ServiceWorkerGlobalScopeNotifications.h',
       'notifications/ServiceWorkerRegistrationNotifications.cpp',
       'notifications/ServiceWorkerRegistrationNotifications.h',
       'performance/SharedWorkerPerformance.cpp',
       'performance/WorkerGlobalScopePerformance.cpp',
       'performance/WorkerGlobalScopePerformance.h',
       'performance/WorkerPerformance.cpp',
       'performance/WorkerPerformance.h',
+      'permissions/PermissionController.cpp',
+      'permissions/PermissionController.h',
       'permissions/Permissions.cpp',
       'permissions/Permissions.h',
+      'permissions/PermissionQueryCallback.cpp',
+      'permissions/PermissionQueryCallback.h',
       'permissions/PermissionStatus.cpp',
       'permissions/PermissionStatus.h',
       'presentation/AvailableChangeEvent.h',
       'presentation/AvailableChangeEvent.cpp',
       'presentation/NavigatorPresentation.cpp',
       'presentation/NavigatorPresentation.h',
       'presentation/Presentation.cpp',
       'presentation/Presentation.h',
       'presentation/PresentationController.cpp',
       'presentation/PresentationController.h',
@@ skipping 360 matching lines @@
       'indexeddb/IDBKeyPathTest.cpp',
       'indexeddb/IDBRequestTest.cpp',
       'indexeddb/IDBTransactionTest.cpp',
       'serviceworkers/CacheTest.cpp',
       'serviceworkers/ServiceWorkerContainerTest.cpp',
       'websockets/DOMWebSocketTest.cpp',
       'websockets/DocumentWebSocketChannelTest.cpp',
     ],
   },
 }