Settings Router Refactor: Support dynamic parameters

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

Index: chrome/test/data/webui/settings/cr_settings_browsertest.js
diff --git a/chrome/test/data/webui/settings/cr_settings_browsertest.js b/chrome/test/data/webui/settings/cr_settings_browsertest.js
index c205465b39ff0a2b6ddad58f15faa1b5a4cfd860..5125ec0ce0cedd4fd01490f065483e281ee9932c 100644
--- a/chrome/test/data/webui/settings/cr_settings_browsertest.js
+++ b/chrome/test/data/webui/settings/cr_settings_browsertest.js
@@ -682,3 +682,40 @@ TEST_F('CrSettingsNonExistentRouteTest', 'All', function() {
   });
   mocha.run();
 });
+
+/**
+ * @constructor
+ * @extends {SettingsPageBrowserTest}
+*/
+function CrSettingsRouteDynamicParametersTest() {}
+
+CrSettingsRouteDynamicParametersTest.prototype = {
+  __proto__: CrSettingsBrowserTest.prototype,
+
+  /** @override */
+  browsePreload: 'chrome://md-settings/internet?guid=a%2Fb&foo=42',
+};
+
+TEST_F('CrSettingsRouteDynamicParametersTest', 'All', function() {
+  suite('DynamicParameters', function() {
+    test('get parameters from URL and navigation', function(done) {
+      assertEquals(settings.Route.INTERNET, settings.getCurrentRoute());
+      assertDeepEquals({guid: 'a/b', foo: '42'}, settings.getQueryParameters());
+
+      settings.navigateTo(settings.Route.SYNC, {bar: 'b=z', biz: '3'});
+      assertEquals(settings.Route.SYNC, settings.getCurrentRoute());
+      assertDeepEquals({bar: 'b=z', biz: '3'}, settings.getQueryParameters());
+      assertEquals('?bar=b%3Dz&biz=3', window.location.search);
+
+      window.addEventListener('popstate', function(event) {
+        assertEquals('/internet', settings.getCurrentRoute().path);
+        assertEquals(settings.Route.INTERNET, settings.getCurrentRoute());
+        assertDeepEquals(
+            {guid: 'a/b', foo: '42'}, settings.getQueryParameters());
+        done();
+      });
+      window.history.back();
+    });
+  });
+  mocha.run();
+});