Add Web Page Replay test to page cycler.

tools/page_cycler/webpagereplay/extension/manifest.json

+// Copyright (c) 2012 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.
+{
+  "name": "Chromium Page Cycler with Web Page Replay.",
+  "version": "1.0.0.0",
+  "description": "Chromium Page Cycler with Web Page Replay.",
+  "background_page": "background.html",
+  "content_scripts": [
+    { "matches": ["file:///*/start.html*"],
+      "js": ["start.js"],
+      "run_at": "document_idle"
+    },
+    { "matches": ["http://*/*", "https://*/*"],
+      "js": ["content.js"],
+      "run_at": "document_start"
+    }
+  ],
+  "permissions": [
+    "browsingData",
+    "cookies",
+    "experimental",
+    "tabs",
+    "<all_urls>"
+  ]
+}