WIP attempt to replace StartWorker/StopWorker IPCs with a new mojo EmbeddedWorker service.

content/common/service_worker/embedded_worker_messages.h

Index: content/common/service_worker/embedded_worker_messages.h
diff --git a/content/common/service_worker/embedded_worker_messages.h b/content/common/service_worker/embedded_worker_messages.h
index 56216ca4fa3945b341d6b9f2fefe72ec5f586aa4..5d5e125cd70df462d4faef643ee40a1358397c91 100644
--- a/content/common/service_worker/embedded_worker_messages.h
+++ b/content/common/service_worker/embedded_worker_messages.h
@@ -17,17 +17,6 @@
 
 #define IPC_MESSAGE_START EmbeddedWorkerMsgStart
 
-// Parameters structure for EmbeddedWorkerMsg_StartWorker.
-IPC_STRUCT_BEGIN(EmbeddedWorkerMsg_StartWorker_Params)
-  IPC_STRUCT_MEMBER(int, embedded_worker_id)
-  IPC_STRUCT_MEMBER(int64, service_worker_version_id)
-  IPC_STRUCT_MEMBER(GURL, scope)
-  IPC_STRUCT_MEMBER(GURL, script_url)
-  IPC_STRUCT_MEMBER(int, worker_devtools_agent_route_id)
-  IPC_STRUCT_MEMBER(bool, wait_for_debugger)
-  IPC_STRUCT_MEMBER(content::V8CacheOptions, v8_cache_options)
-IPC_STRUCT_END()
-
 // Parameters structure for EmbeddedWorkerHostMsg_ReportConsoleMessage.
 // The data members directly correspond to parameters of
 // WorkerMessagingProxy::reportConsoleMessage()
@@ -39,14 +28,6 @@ IPC_STRUCT_BEGIN(EmbeddedWorkerHostMsg_ReportConsoleMessage_Params)
   IPC_STRUCT_MEMBER(GURL, source_url)
 IPC_STRUCT_END()
 
-// Browser -> Renderer message to create a new embedded worker context.
-IPC_MESSAGE_CONTROL1(EmbeddedWorkerMsg_StartWorker,
-                     EmbeddedWorkerMsg_StartWorker_Params /* params */)
-
-// Browser -> Renderer message to stop (terminate) the embedded worker.
-IPC_MESSAGE_CONTROL1(EmbeddedWorkerMsg_StopWorker,
-                     int /* embedded_worker_id */)
-
 // Renderer -> Browser message to indicate that the worker is ready for
 // inspection.
 IPC_MESSAGE_CONTROL1(EmbeddedWorkerHostMsg_WorkerReadyForInspection,