service worker: Avoid starting up for activation during shutdown

content/browser/service_worker/service_worker_process_manager.h

Index: content/browser/service_worker/service_worker_process_manager.h
diff --git a/content/browser/service_worker/service_worker_process_manager.h b/content/browser/service_worker/service_worker_process_manager.h
index 01ddae74be78507452759ef0e7c9873acdd62790..ca44ba76cd69888149767f8ccb69ede89049cba7 100644
--- a/content/browser/service_worker/service_worker_process_manager.h
+++ b/content/browser/service_worker/service_worker_process_manager.h
@@ -81,6 +81,9 @@ class CONTENT_EXPORT ServiceWorkerProcessManager {
   // Returns true if the |pattern| has at least one process to run.
   bool PatternHasProcessToRun(const GURL& pattern) const;
 
+  // Returns true if Shutdown() has been called.
+  bool IsShutdown() const { return !browser_context_; }
+
  private:
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerProcessManagerTest, SortProcess);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerProcessManagerTest,
@@ -109,9 +112,6 @@ class CONTENT_EXPORT ServiceWorkerProcessManager {
     int process_id;
   };
 
-  // Returns true if Shutdown() has been called.
-  bool IsShutdown() const { return !browser_context_; }
-
   // Maps the process ID to its reference count.
   typedef std::map<int, int> ProcessRefMap;