Introduce an extension parameter which is used to customize the extension. It's available for exter…

chrome/test/data/extensions/settings_override/manifest.json

Index: chrome/test/data/extensions/settings_override/manifest.json
diff --git a/chrome/test/data/extensions/settings_override/manifest.json b/chrome/test/data/extensions/settings_override/manifest.json
index fbe38aa9cfacd4dba2f2e38e7402d6204921896e..2ab588da34bfd69a2a9207e9e89db8eaeda18604 100644
--- a/chrome/test/data/extensions/settings_override/manifest.json
+++ b/chrome/test/data/extensions/settings_override/manifest.json
@@ -4,27 +4,27 @@
   "manifest_version": 2,
   "description": "end-to-end browser test for chrome.settings_override API",
   "chrome_settings_overrides": {
-    "homepage": "http://www.homepage.com",
+    "homepage": "http://www.homepage.com?param=__PARAM__",
     "search_provider": {
         "name": "name.__MSG_url_domain__",
         "keyword": "keyword.__MSG_url_domain__",
-        "search_url": "http://www.foo.__MSG_url_domain__/s?q={searchTerms}",
-        "favicon_url": "http://www.foo.__MSG_url_domain__/favicon.ico",
-        "suggest_url": "http://www.foo.__MSG_url_domain__/suggest?q={searchTerms}",
-        "instant_url": "http://www.foo.__MSG_url_domain__/instant?q={searchTerms}",
-        "image_url": "http://www.foo.__MSG_url_domain__/image?q={searchTerms}",
+        "search_url": "http://www.foo.__MSG_url_domain__/s?q={searchTerms}&id=__PARAM__",
+        "favicon_url": "http://www.foo.__MSG_url_domain__/favicon.ico?id=__PARAM__",
+        "suggest_url": "http://www.foo.__MSG_url_domain__/suggest?q={searchTerms}&id=__PARAM__",
+        "instant_url": "http://www.foo.__MSG_url_domain__/instant?q={searchTerms}&id=__PARAM__",
+        "image_url": "http://www.foo.__MSG_url_domain__/image?q={searchTerms}&id=__PARAM__",
         "search_url_post_params": "search_lang=__MSG_url_domain__",
         "suggest_url_post_params": "suggest_lang=__MSG_url_domain__",
         "instant_url_post_params": "instant_lang=__MSG_url_domain__",
         "image_url_post_params": "image_lang=__MSG_url_domain__",
         "alternate_urls": [
-          "http://www.moo.__MSG_url_domain__/s?q={searchTerms}",
-          "http://www.noo.__MSG_url_domain__/s?q={searchTerms}"
+          "http://www.moo.__MSG_url_domain__/s?q={searchTerms}&id=__PARAM__",
+          "http://www.noo.__MSG_url_domain__/s?q={searchTerms}&id=__PARAM__"
         ],
         "encoding": "UTF-8",
         "is_default": true
     },
-    "startup_pages": ["http://www.startup.com"]
+    "startup_pages": ["http://www.startup.com?param=__PARAM__"]
    },
    "default_locale": "de"
 }