Adding `content_security_policy` to a few sample extensions

chrome/common/extensions/docs/examples/api/webNavigation/basic/popup.js

Index: chrome/common/extensions/docs/examples/api/webNavigation/basic/popup.js
diff --git a/chrome/common/extensions/docs/examples/api/webNavigation/basic/popup.js b/chrome/common/extensions/docs/examples/api/webNavigation/basic/popup.js
new file mode 100644
index 0000000000000000000000000000000000000000..35f6e002e1e937b54aebf3ff58bc135afe2c6576
--- /dev/null
+++ b/chrome/common/extensions/docs/examples/api/webNavigation/basic/popup.js
@@ -0,0 +1,36 @@
+// Copyright (c) 2011 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.
+
+/**
+ * @filedescription Initializes the extension's popup page.
+ */
+
+chrome.extension.sendRequest(
+    {'type': 'getMostRequestedUrls'},
+    function generateList(response) {
+      var section = document.querySelector('body>section');
+      var results = response.result;
+      var ol = document.createElement('ol');
+      var li, p, em, code, text;
+      var i;
+      for (i = 0; i < results.length; i++ ) {
+        li = document.createElement('li');
+        p = document.createElement('p');
+        em = document.createElement('em');
+        em.textContent = i + 1;
+        code = document.createElement('code');
+        code.textContent = results[i].url;
+        text = document.createTextNode(
+          chrome.i18n.getMessage('navigationDescription',
+            [results[i].numRequests,
+            results[i].average]));
+        p.appendChild(em);
+        p.appendChild(code);
+        p.appendChild(text);
+        li.appendChild(p);
+        ol.appendChild(li);
+      }
+      section.innerHTML = '';
+      section.appendChild(ol);
+    });