WebUI: Move test_browser_proxy.js one level up.

chrome/test/data/webui/settings/system_page_tests.js

Index: chrome/test/data/webui/settings/system_page_tests.js
diff --git a/chrome/test/data/webui/settings/system_page_tests.js b/chrome/test/data/webui/settings/system_page_tests.js
index 1a29b99a88b06330e05fcaac5b34c7bd6d9e7b16..d6c8dee25b66138fd3197cdf61f4f20af660142a 100644
--- a/chrome/test/data/webui/settings/system_page_tests.js
+++ b/chrome/test/data/webui/settings/system_page_tests.js
@@ -11,11 +11,11 @@ var HARDWARE_ACCELERATION_AT_STARTUP = true;
  * @implements {settings.SystemPageBrowserProxy}
  */
 function TestSystemPageBrowserProxy() {
-  settings.TestBrowserProxy.call(this, ['showProxySettings']);
+  test.TestBrowserProxy.call(this, ['showProxySettings']);
 }
 
 TestSystemPageBrowserProxy.prototype = {
-  __proto__: settings.TestBrowserProxy.prototype,
+  __proto__: test.TestBrowserProxy.prototype,
 
   /** @override */
   showProxySettings: function() {