Adding CSP to Speech Input API sample.

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 2144 matching lines @@
       ],
       "icon": null,
       "id": "a942b7626644674b7a56678930d054497b244ee7",
       "name": "Speech Recognizer",
       "packaged_app": false,
       "path": "examples\/api\/speechInput\/basic\/",
       "protocols": [],
       "search_string": "SPEECH RECOGNIZER RECOGNIZES YOUR SPEECH AND TELLS YOU THE MOST LIKELY RESULT. BACKGROUND_PAGE BROWSER_ACTION EXPERIMENTAL CHROME.BROWSERACTION.ONCLICKED CHROME.BROWSERACTION.SETICON CHROME.EXPERIMENTAL.SPEECHINPUT.ISRECORDING CHROME.EXPERIMENTAL.SPEECHINPUT.ONERROR CHROME.EXPERIMENTAL.SPEECHINPUT.ONRESULT CHROME.EXPERIMENTAL.SPEECHINPUT.START CHROME.EXPERIMENTAL.SPEECHINPUT.STOP",
       "source_files": [
         "background.html",
+        "background.js",
         "manifest.json"
       ],
-      "source_hash": "b092b58c922e769c003eb83e6ef4a63557ddc7f2",
+      "source_hash": "a3e7e6d7c8fee17bd14a56b855d40bca0c10015d",
       "zip_path": "examples\/api\/speechInput\/basic.zip"
     },
     {
       "api_calls": [
         "chrome.browserAction.onClicked",
         "chrome.extension.getURL",
         "chrome.tabs.create",
         "chrome.tabs.get",
         "chrome.tabs.getAllInWindow",
         "chrome.tabs.getSelected",
@@ skipping 291 matching lines @@
         "manifest.json",
         "popup.html",
         "popup.js",
         "sample.css"
       ],
       "source_hash": "62ca453d8d1551ff63dd7c78b49d546bc3af17c6",
       "zip_path": "examples\/api\/extension\/isAllowedAccess.zip"
     }
   ]
 }