Adding `content_security_policy` to a few sample extensions

chrome/common/extensions/docs/examples/api/processes/show_tabs/manifest.json

 {
   "name": "Show Tabs in Process",
   "version": "1.0",
   "description": "Adds a browser action showing which tabs share the current tab's process.",
   "permissions": [
-    "experimental", "tabs"
+    "experimental", "tabs", "chrome://favicon/*"

[Boris Smus, 2011/10/18 21:42:06]

Why do we need this?

[Mike West, 2011/10/19 08:39:12]

Because the extension displays favicons for each item in it's list. Unless we
explicitly whitelist `chrome://favicon` in the extension's permissions, then the
extension can't load images from the origin.

   ],
   "browser_action": {
       "default_title": "Show Tabs in this Process",
       "default_icon": "icon.png",
       "popup": "popup.html"
-  }
+  },
+  "content_security_policy": "default-src 'none'; script-src 'self'; style-src 'self'; img-src chrome://favicon"
 }