Move workers' Performance API code to core/timing

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 119 matching lines @@
       'mediastream/RTCStatsCallback.idl',
       'mediastream/RTCStatsReport.idl',
       'mediastream/RTCStatsResponse.idl',
       'mediastream/SourceInfo.idl',
       'navigatorconnect/CrossOriginConnectEvent.idl',
       'navigatorconnect/CrossOriginServiceWorkerClient.idl',
       'netinfo/NetworkInformation.idl',
       'notifications/Notification.idl',
       'notifications/NotificationEvent.idl',
       'notifications/NotificationPermissionCallback.idl',
-      'performance/WorkerPerformance.idl',
       'permissions/Permissions.idl',
       'permissions/PermissionStatus.idl',
       'plugins/MimeType.idl',
       'plugins/MimeTypeArray.idl',
       'plugins/Plugin.idl',
       'plugins/PluginArray.idl',
       'presentation/AvailableChangeEvent.idl',
       'presentation/DefaultSessionStartEvent.idl',
       'presentation/Presentation.idl',
       'presentation/PresentationSession.idl',
@@ skipping 131 matching lines @@
       'navigatorconnect/NavigatorConnect.idl',
       'navigatorconnect/ServiceWorkerGlobalScopeNavigatorConnect.idl',
       'navigatorconnect/WorkerNavigatorConnect.idl',
       'navigatorcontentutils/NavigatorContentUtils.idl',
       'netinfo/NavigatorNetworkInformation.idl',
       'netinfo/WorkerNavigatorNetworkInformation.idl',
       'notifications/ServiceWorkerGlobalScopeNotifications.idl',
       'notifications/ServiceWorkerRegistrationNotifications.idl',
       'permissions/NavigatorPermissions.idl',
       'permissions/WorkerNavigatorPermissions.idl',
-      'performance/SharedWorkerPerformance.idl',
-      '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',
       'speech/WindowSpeech.idl',
@@ skipping 714 matching lines @@
       'notifications/Notification.cpp',
       'notifications/Notification.h',
       'notifications/NotificationEvent.cpp',
       'notifications/NotificationEvent.h',
       'notifications/NotificationPermissionCallback.h',
       '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/NavigatorPermissions.cpp',
       'permissions/NavigatorPermissions.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',
@@ skipping 427 matching lines @@
       'webaudio/AudioBasicProcessorHandlerTest.cpp',
       'webaudio/ConvolverNodeTest.cpp',
       'webaudio/DynamicsCompressorNodeTest.cpp',
       'webaudio/ScriptProcessorNodeTest.cpp',
       'webaudio/StereoPannerNodeTest.cpp',
       'websockets/DOMWebSocketTest.cpp',
       'websockets/DocumentWebSocketChannelTest.cpp',
     ],
   },
 }