Improved Quickoffice editing about:flag.

chrome/browser/resources/quick_office/manifest_experimental.json

 {
-  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7ctCVtjJUxR/gv6iYPkgLvhSG5j9IcbJEjqR1rbi1OvJOYQkAniDpYo46x9Ah68Fg4e0yTspvjABnB0N8YW+e7iOHhPWz7MfhRsM9AyXn8KvFwZ2BHvhXZVXBmk8wo/VkGZuw4RJWl/itpOCVwin7emaEboRQO6ETBXCVjmdYyQIDAQAB",
-
   "background": {
     "persistent": false,
-    "page": "views/background/backgroundPage.html"
+    "scripts": [
+      "scripts/background/register.js",
+      "scripts/configs/experimentalFeatures.js"
+    ]
   },
   "content_security_policy": "default-src 'self'; connect-src blob: chrome-extension:; style-src 'self' 'unsafe-inline' chrome-extension:; img-src 'self' blob: data:; frame-src chrome-extension:; script-src 'self'",
   "default_locale": "en",
   "description": "Chrome Office Viewer (Beta)",
   "file_browser_handlers": [{
     "default_title": "Chrome Office Viewer (Beta)",
     "file_filters": [
       "filesystem:*.doc",
       "filesystem:*.docx",
       "filesystem:*.docm",
       "filesystem:*.ppt",
       "filesystem:*.pptx",
       "filesystem:*.pptm",
       "filesystem:*.xls",
       "filesystem:*.xlsx"],
     "id": "qoview"
   }],
   "icons": {
     "16": "img/icon_16.png",
     "128": "img/icon_128.png"
   },
   "incognito": "split",
+  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC4zyYTii0VTKI7W2U6fDeAvs3YCVZeAt7C62IC64IDCMHvWy7SKMpOPjfg5v1PgYkFm+fGsCsVLN8NaF7fzYMVtjLc5bqhqPAi56Qidrqh1HxPAAYhwFQd5BVGhZmh1fySHXFPE8VI2tIHwRrASOtx67jbSEk4nBAcJz6n+eGq8QIDAQAB",
   "manifest_version": 2,
   "mime_types": [
     "application/msword",
     "application/vnd.ms-word",
     "application/vnd.msword",
     "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
     "application/vnd.wordprocessing-openxml",
     "application/vnd.ces-quickword",
     "application/vnd.ms-word.document.macroEnabled.12",
     "application/vnd.ms-word.document.12",
     "application/mspowerpoint",
     "application/vnd.ms-powerpoint",
     "application/vnd.openxmlformats-officedocument.presentationml.presentation",
     "application/vnd.ces-quickpoint",
     "application/vnd.presentation-openxml",
     "application/vnd.presentation-openxmlm",
     "application/vnd.ms-powerpoint.presentation.macroEnabled.12",
     "application/msexcel",
     "application/vnd.ms-excel",
     "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
     "application/vnd.ces-quicksheet",
     "application/vnd.spreadsheet-openxml",
     "application/vnd.ms-excel.sheet.macroEnabled.12"],
-  "name": "Quickoffice (Experimental)",
+  "name": "Chrome Office Viewer (Beta)",
   "offline_enabled": true,
   "permissions": [
     "fileBrowserHandler",
     "fileSystem",
     "fileSystem.write",
     "metricsPrivate",
     "streamsPrivate",
     "unlimitedStorage"],
   "version": "2.9.2.14",
   "web_accessible_resources": [
     "views/qowt.html"]
 }