Adding `content_security_policy` to a few sample extensions.

chrome/common/extensions/docs/samples.json

 {
   "api": {
     "chrome.bookmarks.create": "bookmarks.html#method-create",
     "chrome.bookmarks.export": "bookmarks.html#method-export",
     "chrome.bookmarks.get": "bookmarks.html#method-get",
     "chrome.bookmarks.getChildren": "bookmarks.html#method-getChildren",
     "chrome.bookmarks.getRecent": "bookmarks.html#method-getRecent",
     "chrome.bookmarks.getSubTree": "bookmarks.html#method-getSubTree",
     "chrome.bookmarks.getTree": "bookmarks.html#method-getTree",
     "chrome.bookmarks.import": "bookmarks.html#method-import",
@@ skipping 52 matching lines @@
     "chrome.experimental.devtools.inspectedWindow.reload": "experimental.devtools.inspectedWindow.html#method-reload",
     "chrome.experimental.devtools.network.getHAR": "experimental.devtools.network.html#method-getHAR",
     "chrome.experimental.devtools.network.onNavigated": "experimental.devtools.network.html#event-onNavigated",
     "chrome.experimental.devtools.network.onRequestFinished": "experimental.devtools.network.html#event-onRequestFinished",
     "chrome.experimental.devtools.panels.create": "experimental.devtools.panels.html#method-create",
     "chrome.experimental.devtools.panels.setOpenResourceHandler": "experimental.devtools.panels.html#method-setOpenResourceHandler",
     "chrome.experimental.infobars.show": "experimental.infobars.html#method-show",
     "chrome.experimental.savePage.saveAsMHTML": "experimental.savePage.html#method-saveAsMHTML",
     "chrome.experimental.settings.clear": "experimental.settings.html#method-clear",
     "chrome.experimental.settings.get": "experimental.settings.html#method-get",
+    "chrome.experimental.settings.onChanged": "experimental.settings.html#event-onChanged",
     "chrome.experimental.settings.remove": "experimental.settings.html#method-remove",
     "chrome.experimental.settings.set": "experimental.settings.html#method-set",
     "chrome.experimental.speechInput.isRecording": "experimental.speechInput.html#method-isRecording",
     "chrome.experimental.speechInput.onError": "experimental.speechInput.html#event-onError",
     "chrome.experimental.speechInput.onResult": "experimental.speechInput.html#event-onResult",
     "chrome.experimental.speechInput.onSoundEnd": "experimental.speechInput.html#event-onSoundEnd",
     "chrome.experimental.speechInput.onSoundStart": "experimental.speechInput.html#event-onSoundStart",
     "chrome.experimental.speechInput.start": "experimental.speechInput.html#method-start",
     "chrome.experimental.speechInput.stop": "experimental.speechInput.html#method-stop",
     "chrome.experimental.webRequest.addEventListener": "experimental.webRequest.html#method-addEventListener",
@@ skipping 135 matching lines @@
       "id": "0262260daf0c8f7b28feff2ef23b05e7abf9d1e0",
       "name": "A browser action which changes its icon when clicked.",
       "packaged_app": false,
       "path": "examples\/api\/browserAction\/set_icon_path\/",
       "protocols": [
         "http:\/\/"
       ],
       "search_string": "A BROWSER ACTION WHICH CHANGES ITS ICON WHEN CLICKED.  BACKGROUND_PAGE BROWSER_ACTION TABS CHROME.BROWSERACTION.ONCLICKED CHROME.BROWSERACTION.SETICON",
       "source_files": [
         "background.html",
+        "background.js",
         "manifest.json"
       ],
-      "source_hash": "c5752555642e89340c57657b48440b0dcd74ee99",
+      "source_hash": "ac932922a2fa7769791cf7fabefa95307d45153f",
       "zip_path": "examples\/api\/browserAction\/set_icon_path.zip"
     },
     {
       "api_calls": [
         "chrome.tabs.executeScript"
       ],
       "crx_path": null,
       "description": "",
       "features": [
         "browser_action",
@@ skipping 127 matching lines @@
       "packaged_app": false,
       "path": "examples\/extensions\/app_launcher\/",
       "protocols": [],
       "search_string": "APP LAUNCHER  BROWSER_ACTION MANAGEMENT CHROME.EXTENSION.GETURL CHROME.MANAGEMENT.GET CHROME.MANAGEMENT.GETALL CHROME.MANAGEMENT.LAUNCHAPP CHROME.TABS.CREATE",
       "source_files": [
         "manifest.json",
         "popup.css",
         "popup.html",
         "popup.js"
       ],
-      "source_hash": "4cb1348cfca9c990117d52290f93eb5fc5081bc2",
+      "source_hash": "62a69b77d59cda0b038c2e5acdbcae289b3f5176",
       "zip_path": "examples\/extensions\/app_launcher.zip"
     },
     {
       "api_calls": [],
       "crx_path": null,
       "description": "",
       "features": [
         "chrome_url_overrides"
       ],
       "icon": null,
@@ skipping 308 matching lines @@
       "packaged_app": false,
       "path": "examples\/howto\/contentscript_xhr\/",
       "protocols": [
         "https:\/\/"
       ],
       "search_string": "CONTENT SCRIPT CROSS-DOMAIN XMLHTTPREQUEST EXAMPLE DEMONSTRATES MAKING CROSS DOMAIN REQUESTS FROM A CONTENT SCRIPT BY PUTTING TWITTER TRENDS ON GOOGLE NEWS.",
       "source_files": [
         "contentscript.js",
         "manifest.json"
       ],
-      "source_hash": "749314ae399dfc5f6759358b384bc55997fed455",
+      "source_hash": "419d1480250cc6fece78798fdfe99e4e1b4e28fd",
       "zip_path": "examples\/howto\/contentscript_xhr.zip"
     },
     {
       "api_calls": [
         "chrome.tabs.get",
         "chrome.tabs.getSelected"
       ],
       "crx_path": null,
       "description": "Shows the content settings for the current site.",
       "features": [
         "browser_action",
         "contentSettings",
         "popup",
         "tabs"
       ],
       "icon": null,
       "id": "e1f97e61e28ff33131d66dd28a4ed70a77874a51",
       "name": "Content settings",
       "packaged_app": false,
       "path": "examples\/api\/contentSettings\/",
       "protocols": [],
       "search_string": "CONTENT SETTINGS SHOWS THE CONTENT SETTINGS FOR THE CURRENT SITE. BROWSER_ACTION CONTENTSETTINGS POPUP TABS CHROME.TABS.GET CHROME.TABS.GETSELECTED",
       "source_files": [
         "manifest.json",
-        "popup.html"
+        "popup.html",
+        "popup.js"
       ],
-      "source_hash": "14d647a5ea1fa8551089fdb8810b6acaf16530cf",
+      "source_hash": "95619d1c264bb65ac6f8ff105d34830ec87af284",
       "zip_path": "examples\/api\/contentSettings.zip"
     },
     {
       "api_calls": [
         "chrome.contextMenus.create"
       ],
       "crx_path": null,
       "description": "Shows some of the features of the Context Menus API",
       "features": [
         "background_page",
         "contextMenus"
       ],
       "icon": null,
       "id": "5d81304a17cf7ac2887484f730fbd2b01e51e166",
       "name": "Context Menus Sample",
       "packaged_app": false,
       "path": "examples\/api\/contextMenus\/basic\/",
       "protocols": [],
       "search_string": "CONTEXT MENUS SAMPLE SHOWS SOME OF THE FEATURES OF THE CONTEXT MENUS API BACKGROUND_PAGE CONTEXTMENUS CHROME.CONTEXTMENUS.CREATE",
       "source_files": [
         "background.html",
         "manifest.json",
         "sample.js"
       ],
-      "source_hash": "0e35ce268b3b2cf3d9830e6411c85c5dfef2ffdf",
+      "source_hash": "a42707be0ca36201f6e903858a8b3cd044c4eb25",
       "zip_path": "examples\/api\/contextMenus\/basic.zip"
     },
     {
       "api_calls": [
         "chrome.browserAction.onClicked",
         "chrome.cookies.get",
         "chrome.cookies.getAll",
         "chrome.cookies.onChanged",
         "chrome.cookies.remove",
         "chrome.extension.getURL",
@@ skipping 103 matching lines @@
       "features": [
         "background_page",
         "tabs"
       ],
       "icon": "icon-128.png",
       "id": "e3df888a89e35bdeb9c8bc8d03be5e1851b97c68",
       "name": "Extension Docs Search",
       "packaged_app": false,
       "path": "examples\/api\/omnibox\/extension-docs\/",
       "protocols": [
-        "http:\/\/"
+        "https:\/\/"
       ],
       "search_string": "EXTENSION DOCS SEARCH SEARCH THE CHROME EXTENSIONS DOCUMENTATION.  TO USE, TYPE CRDOC PLUS A SEARCH TERM INTO THE OMNIBOX. BACKGROUND_PAGE TABS CHROME.OMNIBOX.ONINPUTCHANGED CHROME.OMNIBOX.ONINPUTENTERED CHROME.TABS.CREATE CHROME.TABS.GET CHROME.TABS.ONREMOVED CHROME.TABS.UPDATE",
       "source_files": [
         "background.html",
+        "background.js",
         "manifest.json"
       ],
-      "source_hash": "0aa8ec9a2c091e227661ca5010d08f6823e643a7",
+      "source_hash": "4c779b160a04cb4264eee14d7969f665953699a7",
       "zip_path": "examples\/api\/omnibox\/extension-docs.zip"
     },
     {
       "api_calls": [
         "chrome.experimental.devtools.network.getHAR",
         "chrome.experimental.devtools.network.onRequestFinished",
         "chrome.extension.onRequest",
         "chrome.extension.sendRequest",
         "chrome.tabs.executeScript"
       ],
@@ skipping 10 matching lines @@
       "name": "FirePHP for Chrome",
       "packaged_app": false,
       "path": "examples\/api\/devtools\/network\/chrome-firephp\/",
       "protocols": [
         "http:\/\/",
         "https:\/\/"
       ],
       "search_string": "FIREPHP FOR CHROME EXTENDS THE DEVELOPER TOOLS, ADDING SUPPORT FOR PARSING FIREPHP MESSAGES FROM SERVER BACKGROUND_PAGE DEVTOOLS_PAGE EXPERIMENTAL TABS CHROME.EXPERIMENTAL.DEVTOOLS.NETWORK.GETHAR CHROME.EXPERIMENTAL.DEVTOOLS.NETWORK.ONREQUESTFINISHED CHROME.EXTENSION.ONREQUEST CHROME.EXTENSION.SENDREQUEST CHROME.TABS.EXECUTESCRIPT",
       "source_files": [
         "background.html",
+        "background.js",
         "devtools.html",
         "devtools.js",
         "manifest.json"
       ],
-      "source_hash": "b607f6ca8f1ccf4343766b480ae21bb220dd949c",
+      "source_hash": "259e28743c1aa6d8778f92fa1af001299f7ad774",
       "zip_path": "examples\/api\/devtools\/network\/chrome-firephp.zip"
     },
     {
       "api_calls": [
         "chrome.browserAction.onClicked",
         "chrome.browserAction.setBadgeBackgroundColor",
         "chrome.browserAction.setBadgeText",
         "chrome.browserAction.setIcon",
         "chrome.browserAction.setTitle",
         "chrome.extension.getBackgroundPage",
@@ skipping 617 matching lines @@
       "icon": "news_icon.png",
       "id": "597015d3bcce3da693b02314afd607bec4f55291",
       "name": "News Reader",
       "packaged_app": false,
       "path": "examples\/extensions\/news_a11y\/",
       "protocols": [
         "http:\/\/"
       ],
       "search_string": "NEWS READER DISPLAYS THE FIRST 5 ITEMS FROM THE GOOGLE NEWS - TOP NEWS RSS FEED IN A POPUP. BROWSER_ACTION POPUP TABS CHROME.TABS.CREATE",
       "source_files": [
+        "feed.css",
         "feed.html",
+        "feed.js",
+        "feed_iframe.css",
+        "feed_iframe.js",
         "manifest.json"
       ],
-      "source_hash": "af7474bf0d3ef1a407f27ae0900167a1408ead35",
+      "source_hash": "800a1cfe78a6ff8a82c85ef3bc52e71a42e9c664",
       "zip_path": "examples\/extensions\/news_a11y.zip"
     },
     {
       "api_calls": [
         "chrome.i18n.getMessage",
         "chrome.tabs.create"
       ],
       "crx_path": null,
       "description": "Displays the first 5 items from the 'Google News - top news' RSS feed in a popup.",
       "features": [
@@ skipping 54 matching lines @@
         "javascript\/util.js",
         "manifest.json",
         "views\/background.html",
         "views\/feed.html",
         "views\/options.html"
       ],
       "source_hash": "cc21920e101dd4d4c535f4842e3f0ab4be285166",
       "zip_path": "examples\/extensions\/news.zip"
     },
     {
-      "api_calls": [
-        "chrome.tabs.create"
-      ],
+      "api_calls": [],
       "crx_path": null,
       "description": "Shows off desktop notifications, which are \"toast\" windows that pop up on the desktop.",
       "features": [
         "background_page",
         "notifications",
         "options_page",
         "tabs"
       ],
       "icon": "128.png",
       "id": "f799e26ceef2367cf836f24bcb47df4398b0df58",
       "name": "Notification Demo",
       "packaged_app": false,
       "path": "examples\/api\/notifications\/",
       "protocols": [],
-      "search_string": "NOTIFICATION DEMO SHOWS OFF DESKTOP NOTIFICATIONS, WHICH ARE TOAST WINDOWS THAT POP UP ON THE DESKTOP. BACKGROUND_PAGE NOTIFICATIONS OPTIONS_PAGE TABS CHROME.TABS.CREATE",
+      "search_string": "NOTIFICATION DEMO SHOWS OFF DESKTOP NOTIFICATIONS, WHICH ARE TOAST WINDOWS THAT POP UP ON THE DESKTOP. BACKGROUND_PAGE NOTIFICATIONS OPTIONS_PAGE TABS",
       "source_files": [
         "background.html",
-        "error.html",
+        "background.js",
         "manifest.json",
-        "options.html"
+        "options.html",
+        "options.js",
+        "style.css"
       ],
-      "source_hash": "bc2985ef75d717779cb6e1e523a3e063067c3494",
+      "source_hash": "e816c895b8ee88a42187bf0734ef828d0d5f375f",
       "zip_path": "examples\/api\/notifications.zip"
     },
     {
       "api_calls": [
         "chrome.omnibox.onInputChanged",
         "chrome.omnibox.onInputEntered"
       ],
       "crx_path": null,
       "description": "To use, type 'omnix' plus a search term into the Omnibox.",
       "features": [
@@ skipping 54 matching lines @@
       ],
       "icon": "icon-128.png",
       "id": "80b86ccc6e8520660fa591caa565826f0ed1b12c",
       "name": "Page action by URL",
       "packaged_app": false,
       "path": "examples\/api\/pageAction\/pageaction_by_url\/",
       "protocols": [],
       "search_string": "PAGE ACTION BY URL SHOWS A PAGE ACTION FOR URLS WHICH HAVE THE LETTER G IN THEM. BACKGROUND_PAGE PAGE_ACTION TABS CHROME.PAGEACTION.SHOW CHROME.TABS.ONUPDATED",
       "source_files": [
         "background.html",
+        "background.js",
         "manifest.json"
       ],
-      "source_hash": "732ef0951e1d6ff4afedb884b0e63cb342bb1499",
+      "source_hash": "e027d9a9748719a4c216fa258a1623910509ac41",
       "zip_path": "examples\/api\/pageAction\/pageaction_by_url.zip"
     },
     {
       "api_calls": [
         "chrome.browserAction.onClicked",
         "chrome.browserAction.setBadgeBackgroundColor",
         "chrome.browserAction.setBadgeText",
         "chrome.browserAction.setTitle",
         "chrome.extension.connect",
         "chrome.extension.getBackgroundPage",
@@ skipping 569 matching lines @@
       ],
       "source_hash": "b6cda534937998343a093fdb74313a85edbc771e",
       "zip_path": "examples\/api\/webNavigation\/basic.zip"
     },
     {
       "api_calls": [
         "chrome.extension.isAllowedFileSchemeAccess",
         "chrome.extension.isAllowedIncognitoAccess"
       ],
       "crx_path": null,
-      "description": "Demonstrates the `extension.isAllowed???Access` APIs",
+      "description": "Demonstrates the `extension.isAllowedFileSchemeAccess` and `extesion.isAllowedIncognitoAccess` APIs",
       "features": [
         "browser_action"
       ],
       "icon": "sample-128.png",
       "id": "0fa4abe6545f0316fea7cfa07c53aa48c4f3d018",
-      "name": "`extension.isAllowed???Access` Example",
+      "name": "`extension.isAllowedFileSchemeAccess` and `extension.isAllowedIncognitoAccess` Example",
       "packaged_app": false,
       "path": "examples\/api\/extension\/isAllowedAccess\/",
       "protocols": [
         "file:\/\/"
       ],
-      "search_string": "`EXTENSION.ISALLOWED???ACCESS` EXAMPLE DEMONSTRATES THE `EXTENSION.ISALLOWED???ACCESS` APIS BROWSER_ACTION CHROME.EXTENSION.ISALLOWEDFILESCHEMEACCESS CHROME.EXTENSION.ISALLOWEDINCOGNITOACCESS",
+      "search_string": "`EXTENSION.ISALLOWEDFILESCHEMEACCESS` AND `EXTENSION.ISALLOWEDINCOGNITOACCESS` EXAMPLE DEMONSTRATES THE `EXTENSION.ISALLOWEDFILESCHEMEACCESS` AND `EXTESION.ISALLOWEDINCOGNITOACCESS` APIS BROWSER_ACTION CHROME.EXTENSION.ISALLOWEDFILESCHEMEACCESS CHROME.EXTENSION.ISALLOWEDINCOGNITOACCESS",
       "source_files": [
         "manifest.json",
         "popup.html",
+        "popup.js",
         "sample.css"
       ],
-      "source_hash": "c8bfc2b60f25c24dc3c5aaf75dd635c9419df66d",
+      "source_hash": "62ca453d8d1551ff63dd7c78b49d546bc3af17c6",
       "zip_path": "examples\/api\/extension\/isAllowedAccess.zip"
     }
   ]
 }