Added chrome switch that lets tests override URL path, moved GAIA auth extension from CrOS

chrome/browser/resources/chromeos/gaia_auth/manifest_test.json

Index: chrome/browser/resources/chromeos/gaia_auth/manifest_test.json
diff --git a/chrome/browser/resources/chromeos/gaia_auth/manifest_test.json b/chrome/browser/resources/chromeos/gaia_auth/manifest_test.json
deleted file mode 100644
index c5228f7ae12c550a8b51d50d2446dce0ca5abfe2..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/chromeos/gaia_auth/manifest_test.json
+++ /dev/null
@@ -1,40 +0,0 @@
-{
-  // chrome-extension://mfffpogegjflfpflabcdkioaeobkgjik/
-  "key": "MIGdMA0GCSqGSIb3DQEBAQUAA4GLADCBhwKBgQC4L17nAfeTd6Xhtx96WhQ6DSr8KdHeQmfzgCkieKLCgUkWdwB9G1DCuh0EPMDn1MdtSwUAT7xE36APEzi0X/UpKjOVyX8tCC3aQcLoRAE0aJAvCcGwK7qIaQaczHmHKvPC2lrRdzSoMMTC5esvHX+ZqIBMi123FOL0dGW6OPKzIwIBIw==",
-  "name": "GaiaTestAuthExtension",
-  "version": "0.0.1",
-  "manifest_version": 2,
-  "content_security_policy": "default-src 'self'; script-src 'self'; frame-src 'self' https://insecure.com https://www.google.com/accounts/ https://accounts.google.com https://gaiastaging.corp.google.com",
-  "description": "GAIA Test Component Extension",
-  "content_scripts": [
-    {
-      "matches": [
-          "https://www.google.com/accounts/*",
-          "https://accounts.google.com/*",
-          "https://gaiastaging.corp.google.com/*",
-          "https://insecure.com/*"
-      ],
-      "js": ["test/content.js"],
-      "all_frames": true
-    }
-  ],
-  "web_accessible_resources": [
-    "main.css",
-    "main.html",
-    "main.js",
-    "offline.css",
-    "offline.html",
-    "offline.js",
-    "success.html",
-    "success.js",
-    "util.js",
-    "test/content.js"
-  ],
-  "permissions": [
-      "https://insecure.com/*",
-      "https://www.google.com/accounts/*",
-      "https://accounts.google.com/*",
-      "https://gaiastaging.corp.google.com/*",
-      "chrome://oobe/"
-  ]
-}