Move the worker script loading code to the worker process (phase:2/5)

content/worker/websharedworkerclient_proxy.cc

Index: content/worker/websharedworkerclient_proxy.cc
diff --git a/content/worker/websharedworkerclient_proxy.cc b/content/worker/websharedworkerclient_proxy.cc
index 8175b003a5e77f733d93c081f44ccfe9f79d45a4..538657df28ad6b40f611ca0bff8292e721e9eba1 100644
--- a/content/worker/websharedworkerclient_proxy.cc
+++ b/content/worker/websharedworkerclient_proxy.cc
@@ -42,7 +42,8 @@ WebSharedWorkerClientProxy::WebSharedWorkerClientProxy(
       appcache_host_id_(0),
       stub_(stub),
       weak_factory_(this),
-      devtools_agent_(NULL) {
+      devtools_agent_(NULL),
+      app_cache_host_(NULL) {
 }
 
 WebSharedWorkerClientProxy::~WebSharedWorkerClientProxy() {
@@ -59,6 +60,26 @@ void WebSharedWorkerClientProxy::workerContextDestroyed() {
     stub_->Shutdown();
 }
 
+void WebSharedWorkerClientProxy::workerScriptLoaded() {
+  if (stub_)
+    stub_->WorkerScriptLoaded();
+}
+
+void WebSharedWorkerClientProxy::workerScriptLoadFailed() {
+  if (stub_)
+    stub_->WorkerScriptLoadFailed();
+}
+
+void WebSharedWorkerClientProxy::selectAppCacheID(long long app_cache_id) {
+  if (app_cache_host_) {
+    // app_cache_host_ could become stale as it's owned by blink's
+    // DocumentLoader. This method is assumed to be called while it's valid.
+    app_cache_host_->backend()->SelectCacheForSharedWorker(
+        app_cache_host_->host_id(),
+        app_cache_id);
+  }
+}
+
 blink::WebNotificationPresenter*
 WebSharedWorkerClientProxy::notificationPresenter() {
   // TODO(johnnyg): Notifications are not yet hooked up to workers.
@@ -69,13 +90,14 @@ WebSharedWorkerClientProxy::notificationPresenter() {
 
 WebApplicationCacheHost* WebSharedWorkerClientProxy::createApplicationCacheHost(
     blink::WebApplicationCacheHostClient* client) {
-  WorkerWebApplicationCacheHostImpl* host =
+  DCHECK(!app_cache_host_);
+  app_cache_host_ =
       new WorkerWebApplicationCacheHostImpl(stub_->appcache_init_info(),
                                             client);
   // Remember the id of the instance we create so we have access to that
   // value when creating nested dedicated workers in createWorker.
-  appcache_host_id_ = host->host_id();
-  return host;
+  appcache_host_id_ = app_cache_host_->host_id();
+  return app_cache_host_;
 }
 
 blink::WebWorkerPermissionClientProxy*