Fix transient page sample extension to use 'runtime' API, which landed just

chrome/common/extensions/docs/samples.json

 {
   "api": {
     "chrome.bookmarks.create": "bookmarks.html#method-create",
     "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.move": "bookmarks.html#method-move",
     "chrome.bookmarks.onChanged": "bookmarks.html#event-onChanged",
@@ skipping 2425 matching lines @@
       "source_hash": "683f9b121326abe7053ea011b27dbd03f5b7b9d7",
       "zip_path": "examples\/api\/permissions\/extension-questions.zip"
     },
     {
       "api_calls": [
         "chrome.bookmarks.onRemoved",
         "chrome.browserAction.onClicked",
         "chrome.browserAction.setBadgeText",
         "chrome.experimental.alarms.create",
         "chrome.experimental.alarms.onAlarm",
-        "chrome.experimental.extension.onBackgroundPageUnloadingSoon",
-        "chrome.experimental.extension.onInstalled",
+        "chrome.experimental.runtime.onBackgroundPageUnloadingSoon",
+        "chrome.experimental.runtime.onInstalled",
         "chrome.extension.onMessage",
         "chrome.extension.sendMessage",
         "chrome.tabs.executeScript",
         "chrome.tabs.query",
         "chrome.tabs.sendMessage"
       ],
       "crx_path": null,
       "description": "Demonstrates usage and features of the transient page",
       "features": [
         "background_page",
         "bookmarks",
         "browser_action",
         "experimental",
         "tabs"
       ],
       "icon": null,
       "id": "7db846942d754cb51d0fd1fcb60a97fa4f1e21ad",
       "name": "Transient Page Example",
       "packaged_app": false,
       "path": "examples\/api\/transientPage\/basic\/",
       "protocols": [
         "http:\/\/"
       ],
-      "search_string": "TRANSIENT PAGE EXAMPLE DEMONSTRATES USAGE AND FEATURES OF THE TRANSIENT PAGE BACKGROUND_PAGE BOOKMARKS BROWSER_ACTION EXPERIMENTAL TABS CHROME.BOOKMARKS.ONREMOVED CHROME.BROWSERACTION.ONCLICKED CHROME.BROWSERACTION.SETBADGETEXT CHROME.EXPERIMENTAL.ALARMS.CREATE CHROME.EXPERIMENTAL.ALARMS.ONALARM CHROME.EXPERIMENTAL.EXTENSION.ONBACKGROUNDPAGEUNLOADINGSOON CHROME.EXPERIMENTAL.EXTENSION.ONINSTALLED CHROME.EXTENSION.ONMESSAGE CHROME.EXTENSION.SENDMESSAGE CHROME.TABS.EXECUTESCRIPT CHROME.TABS.QUERY CHROME.TABS.SENDMESSAGE",
+      "search_string": "TRANSIENT PAGE EXAMPLE DEMONSTRATES USAGE AND FEATURES OF THE TRANSIENT PAGE BACKGROUND_PAGE BOOKMARKS BROWSER_ACTION EXPERIMENTAL TABS CHROME.BOOKMARKS.ONREMOVED CHROME.BROWSERACTION.ONCLICKED CHROME.BROWSERACTION.SETBADGETEXT CHROME.EXPERIMENTAL.ALARMS.CREATE CHROME.EXPERIMENTAL.ALARMS.ONALARM CHROME.EXPERIMENTAL.RUNTIME.ONBACKGROUNDPAGEUNLOADINGSOON CHROME.EXPERIMENTAL.RUNTIME.ONINSTALLED CHROME.EXTENSION.ONMESSAGE CHROME.EXTENSION.SENDMESSAGE CHROME.TABS.EXECUTESCRIPT CHROME.TABS.QUERY CHROME.TABS.SENDMESSAGE",
       "source_files": [
         "background.js",
         "content.js",
         "manifest.json"
       ],
-      "source_hash": "9683a215d1368a1047072709fdca7b84853d396e",
+      "source_hash": "7e9616c15e22991edf11d2a53e0e2a33977154ce",
       "zip_path": "examples\/api\/transientPage\/basic.zip"
     },
     {
       "api_calls": [
         "chrome.tts.getVoices",
         "chrome.tts.speak",
         "chrome.tts.stop"
       ],
       "crx_path": null,
       "description": "Tool for developers of Chrome TTS engine extensions to help them test their engines are implementing the API correctly.",
@@ skipping 130 matching lines @@
       "source_files": [
         "manifest.json",
         "popup.html",
         "popup.js",
         "sample.css"
       ],
       "source_hash": "8e51dc3a9577065d22ce92f3c838edc5ceaf4e65",
       "zip_path": "examples\/api\/extension\/isAllowedAccess.zip"
     }
   ]
-}
+}