Make sure the workers are given a chance to terminate their thread when the IPC channel fails.

Usually, the ChildThread::OnChannelError() simply kills the message loop. we want to give workers
an opportunity to get out of their threads to avoid crashes when main thread destroys globals.
BUG=35963
TEST=WorkerTest.StressJSExecution
Review URL: http://codereview.chromium.org/647064

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@39951 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 19 insertions, 0 deletions

diff --git a/chrome/worker/worker_thread.cc b/chrome/worker/worker_thread.cc
index ac8a1c7..0591902 100644
--- a/chrome/worker/worker_thread.cc
+++ b/chrome/worker/worker_thread.cc
@@ -62,3 +62,22 @@ void WorkerThread::OnCreateWorker(const GURL& url,
   else
     new WebWorkerStub(url, route_id);
 }
+
+// The browser process is likely dead. Terminate all workers.
+void WorkerThread::OnChannelError() {
+  set_on_channel_error_called(true);
+
+  for (WorkerStubsList::iterator it = worker_stubs_.begin();
+       it != worker_stubs_.end(); ++it) {
+    (*it)->OnChannelError();
+  }
+}
+
+void WorkerThread::RemoveWorkerStub(WebWorkerStubBase* stub) {
+  worker_stubs_.erase(stub);
+}
+
+void WorkerThread::AddWorkerStub(WebWorkerStubBase* stub) {
+  worker_stubs_.insert(stub);
+}
+