1 files changed, 46 insertions, 0 deletions
diff --git a/chromium/extensions/renderer/worker_script_context_set.h b/chromium/extensions/renderer/worker_script_context_set.h
new file mode 100644
index 00000000000..dd33a77d6a7
--- /dev/null
+++ b/chromium/extensions/renderer/worker_script_context_set.h
@@ -0,0 +1,46 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef EXTENSIONS_RENDERER_WORKER_SCRIPT_CONTEXT_SET_H_
+#define EXTENSIONS_RENDERER_WORKER_SCRIPT_CONTEXT_SET_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "base/threading/thread_local.h"
+#include "content/public/child/worker_thread.h"
+#include "url/gurl.h"
+#include "v8/include/v8.h"
+
+namespace extensions {
+
+class ScriptContext;
+
+// A set of ScriptContexts owned by worker threads. Thread safe.
+class WorkerScriptContextSet : public content::WorkerThread::Observer {
+ public:
+  WorkerScriptContextSet();
+
+  ~WorkerScriptContextSet() override;
+
+  // Inserts |context| into the set. Contexts are stored in TLS.
+  void Insert(scoped_ptr<ScriptContext> context);
+
+  // Removes the ScriptContext associated with |v8_context| which was added for
+  // |url| (used for sanity checking).
+  void Remove(v8::Local<v8::Context> v8_context, const GURL& url);
+
+ private:
+  // WorkerThread::Observer:
+  void WillStopCurrentWorkerThread() override;
+
+  // Implement thread safety by storing each ScriptContext in TLS.
+  base::ThreadLocalPointer<ScopedVector<ScriptContext>> contexts_tls_;
+
+  DISALLOW_COPY_AND_ASSIGN(WorkerScriptContextSet);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_RENDERER_WORKER_SCRIPT_CONTEXT_SET_H_