Reland of ServiceWorker: Implement StartWorker by using mojo

content/common/service_worker/service_worker_utils.cc

Index: content/common/service_worker/service_worker_utils.cc
diff --git a/content/common/service_worker/service_worker_utils.cc b/content/common/service_worker/service_worker_utils.cc
index 30faed4513617bdbe49af964b5d364da2e0f6d8d..fb3e7251f1a60cb761080b74132d923d1a18e301 100644
--- a/content/common/service_worker/service_worker_utils.cc
+++ b/content/common/service_worker/service_worker_utils.cc
@@ -6,6 +6,7 @@
 
 #include <string>
 
+#include "base/command_line.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "content/public/common/origin_util.h"
@@ -118,6 +119,12 @@
          OriginCanAccessServiceWorkers(script_url);
 }
 
+// static
+bool ServiceWorkerUtils::IsMojoForServiceWorkerEnabled() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kMojoServiceWorker);
+}
+
 bool LongestScopeMatcher::MatchLongest(const GURL& scope) {
   if (!ServiceWorkerUtils::ScopeMatches(scope, url_))
     return false;