Make HelpApp component extension.

chrome/browser/resources/help_app/manifest.json

Index: chrome/browser/resources/help_app/manifest.json
diff --git a/chrome/browser/resources/help_app/manifest.json b/chrome/browser/resources/help_app/manifest.json
new file mode 100644
index 0000000000000000000000000000000000000000..b361f3b531de15e76927c5aabf00de95af6d97c4
--- /dev/null
+++ b/chrome/browser/resources/help_app/manifest.json
@@ -0,0 +1,18 @@
+{
+  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCqtHjbcvWT9Kbcapi0SaG28I66eRQHQvOqngCizm87qMb9RTgrftaUAGwPmxFLy4gBwO572N5ACpxsR6m2fRg9PSjeqaEojiFd28KY/b4VPoq/ukNOy97Ns7lPv4gmtNB8txuFIFuNw3s1k8nEJVAp659d7SnMsL4O1uXkW1huGQIDAQAB",
+  "name": "__MSG_extName__",

[Aaron Boodman, 2010/12/13 16:29:43]

Is the help app localized? (does it has a _locales folder?). Otherwise this
string will show up literally in the UI.

[Dmitry Polukhin, 2010/12/13 19:52:38]

Yes, you can see sources here https://chromereview.prom.corp.google.com/2134023

+  "version": "1.1.5",
+  "icons": {"16": "images/Help_16.png",
+            "24": "images/Help_24.png",
+            "48": "images/Help_48.png",
+            "128": "images/Help_128.png" },
+  "description": "__MSG_extDescription__",
+  "default_locale": "en",
+  "background_page": "background.html",
+  "incognito": "split",
+  "permissions": [
+    "tabs",
+    "http://www.google.com/support/chromeos/*/*",
+    "https://www.google.com/support/chromeos/*/*"
+  ]
+}