Add a handful of startup tests that run with different types of install extensions.

chrome/test/data/extensions/profiles/content_scripts1/Default/Preferences

Index: chrome/test/data/extensions/profiles/content_scripts1/Default/Preferences
diff --git a/chrome/test/data/extensions/profiles/content_scripts1/Default/Preferences b/chrome/test/data/extensions/profiles/content_scripts1/Default/Preferences
new file mode 100755
index 0000000000000000000000000000000000000000..6d477c9865d6c43b960a05a4c2230b0610f56bfe
--- /dev/null
+++ b/chrome/test/data/extensions/profiles/content_scripts1/Default/Preferences
@@ -0,0 +1,36 @@
+{
+   "download": {
+      "directory_upgrade": true,
+      "extensions_to_open": ""
+   },
+   "extensions": {
+      "autoupdate": {
+         "next_check": "12897640036342487"
+      },
+      "settings": {
+         "behllobkkfkfnphdnhnkndlbkcpglgmj": {
+            "location": 1,
+            "manifest":
+            {
+              "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDuUZGKCDbff6IRaxa4Pue7PPkxwPaNhGT3JEqppEsNWFjM80imEdqMbf3lrWqEfaHgaNku7nlpwPO1mu3/4Hr+XdNa5MhfnOnuPee4hyTLwOs3Vzz81wpbdzUxZSi2OmqMyI5oTaBYICfNHLwcuc65N5dbt6WKGeKgTpp4v7j7zwIDAQAB",
+              "version": "1.0.0.0",
+              "name": "1 content script",
+              "content_scripts": [
+                { "matches": ["file://*"], "js": ["script1.js"] }
+              ]
+            },
+            "path": "behllobkkfkfnphdnhnkndlbkcpglgmj/1.0.0.0",
+            "state": 1
+         }
+      }
+   },
+   "profile": {
+      "exited_cleanly": true,
+      "id": "not-signed-in",
+      "name": "",
+      "nickname": ""
+   },
+   "session": {
+      "urls_to_restore_on_startup": [  ]
+   }
+}