Check that all shared workers are terminated.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index d7a1f3958a4ac9896d8f6c0289a611d7b7a2bd97..4669b8d88020c7a2659bcc9da8fbce395e08f1c2 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -1104,6 +1104,12 @@ void BrowserMainLoop::ShutdownThreadsAndCleanUp() {
       case BrowserThread::IO: {
         TRACE_EVENT0("shutdown", "BrowserMainLoop::Subsystem:IOThread");
         ResetThread_IO(std::move(io_thread_));
+
+        // TODO(alokp): Remove after collecting crash data.
+        // Temporary checks to verify that all shared workers are terminated.

[horo, 2016/08/09 04:03:24]

Nit: s/shared workers/shared workers and service workers/

+        // It is suspected that shared workers prevent render process hosts
+        // from shutting down: crbug.com/608049
+        RenderProcessHostImpl::CheckAllWorkersTerminated();
         break;
       }
       case BrowserThread::UI: