Add IPC stubs between browser and ServiceWorker's worker context in the child process

content/common/service_worker_messages.h

Index: content/common/service_worker_messages.h
diff --git a/content/common/service_worker_messages.h b/content/common/service_worker_messages.h
index d2a5eb27602b15e38c9a351eb9bc231da098c5b3..dd6cc4c4699d72b6b67f8dcefd34df9141348885 100644
--- a/content/common/service_worker_messages.h
+++ b/content/common/service_worker_messages.h
@@ -5,9 +5,11 @@
 // Message definition file, included multiple times, hence no include guard.
 
 #include "base/strings/string16.h"
+#include "content/common/service_worker_interfaces.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_param_traits.h"
 #include "third_party/WebKit/public/platform/WebServiceWorkerError.h"
+#include "third_party/WebKit/public/web/WebContentSecurityPolicy.h"
 #include "url/gurl.h"
 
 #undef IPC_MESSAGE_EXPORT
@@ -71,3 +73,34 @@ IPC_MESSAGE_CONTROL3(ServiceWorkerMsg_StartWorker,
 // Browser -> Renderer message to terminate the embedded worker.
 IPC_MESSAGE_CONTROL1(ServiceWorkerMsg_TerminateWorker,
                      int /* embedded_worker_id */)
+
+// Renderer -> Browser message to indicate that the worker is started.
+IPC_MESSAGE_CONTROL2(ServiceWorkerHostMsg_WorkerStarted,

[alecflett, 2013/12/19 00:59:11]

Should the embedded worker messages be called EmbeddedWorkerHostMsg and
whatnot?)

+                     int /* thread_id */,
+                     int /* embedded_worker_id */)
+
+// Renderer -> Browser message to indicate that the worker is stopped.
+IPC_MESSAGE_CONTROL1(ServiceWorkerHostMsg_WorkerStopped,
+                     int /* embedded_worker_id */)
+
+// ---------------------------------------------------------------------------
+// For ServiceWorkerContext related messages, which are directly sent from
+// browser to the worker thread in the child process. We use a new message class
+// for this for easier cross-thread message dispatching.
+
+#undef IPC_MESSAGE_START
+#define IPC_MESSAGE_START ServiceWorkerContextMsgStart
+
+// TODO: this will need more fields.
+IPC_STRUCT_TRAITS_BEGIN(content::ServiceWorkerFetchRequest)
+  IPC_STRUCT_TRAITS_MEMBER(url)
+  IPC_STRUCT_TRAITS_MEMBER(method)
+  IPC_STRUCT_TRAITS_MEMBER(referrer)
+  IPC_STRUCT_TRAITS_MEMBER(headers)
+  IPC_STRUCT_TRAITS_MEMBER(is_main_resource_load)
+IPC_STRUCT_TRAITS_END()
+
+IPC_MESSAGE_CONTROL3(ServiceWorkerContextMsg_FetchEvent,
+                     int /* thread_id */,
+                     int /* embedded_worker_id */,
+                     content::ServiceWorkerFetchRequest)