ServiceWorker: Implement StartWorker by using mojo

content/public/common/web_preferences.mojom

Index: content/public/common/web_preferences.mojom
diff --git a/content/public/common/web_preferences.mojom b/content/public/common/web_preferences.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..72c583d5b4f1a03a7801a4bbe9b773bd9fcd671e
--- /dev/null
+++ b/content/public/common/web_preferences.mojom
@@ -0,0 +1,14 @@
+// Copyright 2016 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.
+
+module content.mojom;
+
+// Cache options for V8. See V8CacheOptions.h for information on the options.
+enum V8CacheOptions {
+  V8_CACHE_OPTIONS_DEFAULT,

[dcheng, 2016/09/07 07:51:09]

mojo enums are enum classes by default, so you can omit the V8_CACHE_OPTIONS_
prefix.

[shimazu, 2016/09/12 06:28:19]

Acknowledged.

+  V8_CACHE_OPTIONS_NONE,
+  V8_CACHE_OPTIONS_PARSE,
+  V8_CACHE_OPTIONS_CODE,
+  V8_CACHE_OPTIONS_LAST = V8_CACHE_OPTIONS_CODE
+};