Reland of Check that all shared workers are terminated.

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 32d588774b5435e83a04db6bb361a12f8c1d7269..beb004baa1b9d48c2b1a5c1f77e58bb30a9fd23b 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -246,6 +246,12 @@
   static void RegisterRendererMainThreadFactory(
       RendererMainThreadFactoryFunction create);
 
+  // TODO(alokp): Remove after collecting crash data.
+  // Temporary checks to verify that all shared workers are terminated.
+  // It is suspected that shared workers prevent render process hosts
+  // from shutting down: crbug.com/608049
+  static void CheckAllWorkersTerminated();
+
 #if defined(OS_ANDROID)
   const scoped_refptr<BrowserDemuxerAndroid>& browser_demuxer_android() {
     return browser_demuxer_android_;