Add the ability to show a demo app on OOBE if a machine is derelict.

chrome/browser/resources/chromeos/demo_app/manifest.json

Index: chrome/browser/resources/chromeos/demo_app/manifest.json
diff --git a/chrome/browser/resources/chromeos/demo_app/manifest.json b/chrome/browser/resources/chromeos/demo_app/manifest.json
new file mode 100644
index 0000000000000000000000000000000000000000..b48679ba478fa20e64285590697b6f3d011ea64a
--- /dev/null
+++ b/chrome/browser/resources/chromeos/demo_app/manifest.json
@@ -0,0 +1,14 @@
+{

[bartfab (slow), 2014/02/13 19:51:53]

I find it strange that we ship the manifest with the Chrome source code and the
app separately. Is there any reason that the manifest cannot reside inside
/usr/share/chromeos-assets/demo_app so that it gets updated automatically
together with the app?

[rkc, 2014/02/13 23:22:01]

We're loading this as a component app, not a regular app. If we switch to
loading this just as a regular app, we can move this manifest out. I am
discussing the pros/cons of that with a few folks here before deciding what to
do with it in M35.

[bartfab (slow), 2014/02/17 15:53:46]

When loading the app, you specify the path to the manifest. Why would you be
unable to load it as a component app if the path pointed to somewhere inside
/usr/share/chromeos-assets/demo_app?

+  // chrome-extension://klimoghijjogocdbaikffefjfcfheiel

[bartfab (slow), 2014/02/13 19:51:53]

Comments are not allowed in JSON. This file is invalid.

[rkc, 2014/02/13 23:22:01]

Almost every component app manifest in the tree has that comment, so I am pretty
sure that the manifest parser handles comments fine.

[bartfab (slow), 2014/02/17 15:53:46]

It's still invalid JSON :).

+  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqTqJNPnnhAarSbA5aPvPU/h6BxvHO+PWQLVab5RyJUxl1eVnZFx9sIGoXctUgKG+DXpSflYhsvK7opMd1jPqdeSjeSvIDOlsSNX45G+FhAqPQ7OHDdKboQb86TbE53n4qXYamQcx09VIJhi19mPBdqod6myCrTYjPukKiNwAlIEz6eAQL/++uZnIyRzvkht3aMMSfA2PP1qg0ie9aHE/bTwPec9I1kUIe4dPz4NaI5hKxKoDVk2TC9MNNEUx1YznuZNP6Vr21ZRutaOIiptnz1/QJXVr37EMqKvEwNJ/zGFhk1nNju7hYRTbf55CID94yWY14SevnO1nprEGv8+zAwIDAQAB",
+  "name": "Demo App",
+  "version": "1.0",
+  "manifest_version": 2,
+  "description": "ChromeOS Demo App",
+  "permissions": ["power"],
+  "app": {
+    "background": {
+      "scripts": ["js/launch.js"]
+    }
+  }
+}