Keep event page alive when there's some Pepper plugin on it.

ppapi/tests/extensions/load_unload/manifest.json

Index: ppapi/tests/extensions/load_unload/manifest.json
diff --git a/chrome/test/data/extensions/api_test/lazy_background_page/browser_action_create_tab/manifest.json b/ppapi/tests/extensions/load_unload/manifest.json
similarity index 56%
copy from chrome/test/data/extensions/api_test/lazy_background_page/browser_action_create_tab/manifest.json
copy to ppapi/tests/extensions/load_unload/manifest.json
index deb0b6798e9865abd17a33be2fde9dacdfc0da4d..33d12dab3f3282cf15d43b881e61c877e8af3dff 100644
--- a/chrome/test/data/extensions/api_test/lazy_background_page/browser_action_create_tab/manifest.json
+++ b/ppapi/tests/extensions/load_unload/manifest.json
@@ -1,9 +1,8 @@
 {
-  "name": "Extensions Button",
-  "description": "Access the Extensions window directly from the toolbar",
-  "version": "1",
+  "name": "Lazy background wait for NaCl test",
+  "description": "Tests that a lazy background page stays alive while a NaCl module exists in its DOM",
+  "version": "0",
   "manifest_version": 2,
-  "permissions": ["tabs"],
   "background": {
     "scripts": ["background.js"],
     "persistent": false