ServiceWorker: Introduce ServiceWorkerMessageEvent to replace MessageEvent (3/3).

Source/modules/modules.gypi

Index: Source/modules/modules.gypi
diff --git a/Source/modules/modules.gypi b/Source/modules/modules.gypi
index 143d929cee782065bd88c983c137c43494f93fe1..925714729efa1ae7e308a64c0fd66b152d6cecc8 100644
--- a/Source/modules/modules.gypi
+++ b/Source/modules/modules.gypi
@@ -168,6 +168,7 @@
       'serviceworkers/ServiceWorker.idl',
       'serviceworkers/ServiceWorkerContainer.idl',
       'serviceworkers/ServiceWorkerGlobalScope.idl',
+      'serviceworkers/ServiceWorkerMessageEvent.idl',
       'serviceworkers/ServiceWorkerRegistration.idl',
       'serviceworkers/StashedMessagePort.idl',
       'serviceworkers/StashedPortCollection.idl',
@@ -334,6 +335,7 @@
       'push_messaging/PushEvent.idl',
       'serviceworkers/ExtendableEvent.idl',
       'serviceworkers/FetchEvent.idl',
+      'serviceworkers/ServiceWorkerMessageEvent.idl',
       'speech/SpeechRecognitionError.idl',
       'speech/SpeechRecognitionEvent.idl',
       'speech/SpeechSynthesisEvent.idl',
@@ -393,6 +395,7 @@
       'serviceworkers/ExtendableEventInit.idl',
       'serviceworkers/FetchEventInit.idl',
       'serviceworkers/RegistrationOptions.idl',
+      'serviceworkers/ServiceWorkerMessageEventInit.idl',
       'speech/SpeechRecognitionErrorInit.idl',
       'speech/SpeechRecognitionEventInit.idl',
       'storage/StorageEventInit.idl',
@@ -508,6 +511,8 @@
       '<(blink_modules_output_dir)/serviceworkers/FetchEventInit.h',
       '<(blink_modules_output_dir)/serviceworkers/RegistrationOptions.cpp',
       '<(blink_modules_output_dir)/serviceworkers/RegistrationOptions.h',
+      '<(blink_modules_output_dir)/serviceworkers/ServiceWorkerMessageEventInit.cpp',
+      '<(blink_modules_output_dir)/serviceworkers/ServiceWorkerMessageEventInit.h',
       '<(blink_modules_output_dir)/speech/SpeechRecognitionErrorInit.cpp',
       '<(blink_modules_output_dir)/speech/SpeechRecognitionErrorInit.h',
       '<(blink_modules_output_dir)/speech/SpeechRecognitionEventInit.cpp',
@@ -1172,6 +1177,8 @@
       'serviceworkers/ServiceWorkerGlobalScope.h',
       'serviceworkers/ServiceWorkerGlobalScopeClient.cpp',
       'serviceworkers/ServiceWorkerGlobalScopeClient.h',
+      'serviceworkers/ServiceWorkerMessageEvent.cpp',
+      'serviceworkers/ServiceWorkerMessageEvent.h',
       'serviceworkers/ServiceWorkerRegistration.cpp',
       'serviceworkers/ServiceWorkerRegistration.h',
       'serviceworkers/ServiceWorkerScriptCachedMetadataHandler.cpp',