Revert of Revert of DevTools: Introduce module initializers

Source/devtools/front_end/heap_snapshot_worker/_module.js

Index: Source/devtools/front_end/heap_snapshot_worker/_module.js
diff --git a/Source/devtools/front_end/heap_snapshot_worker/_module.js b/Source/devtools/front_end/heap_snapshot_worker/_module.js
new file mode 100644
index 0000000000000000000000000000000000000000..5acb18a65060e8c1ab1b1d4a1aa8553207c923dc
--- /dev/null
+++ b/Source/devtools/front_end/heap_snapshot_worker/_module.js
@@ -0,0 +1,15 @@
+// Copyright 2014 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.
+
+importScripts("../common/utilities.js");
+importScripts("../common/WebInspector.js");
+importScripts("../common/UIString.js");
+importScripts("../common/TextUtils.js");
+importScripts("../profiler/HeapSnapshotCommon.js");
+importScripts("AllocationProfile.js");
+importScripts("HeapSnapshot.js");
+importScripts("HeapSnapshotLoader.js");
+importScripts("HeapSnapshotWorkerDispatcher.js");
+importScripts("JSHeapSnapshot.js");
+importScripts("HeapSnapshotWorker.js");