Add a test for checking that refreshing a page does load the same WebUI page.

chrome/browser/ui/webui/settings_browsertest.cc

Index: chrome/browser/ui/webui/settings_browsertest.cc
===================================================================
--- chrome/browser/ui/webui/settings_browsertest.cc	(revision 82016)
+++ chrome/browser/ui/webui/settings_browsertest.cc	(working copy)
@@ -68,6 +68,7 @@
  protected:
   virtual void SetUpInProcessBrowserTestFixture() {
     WebUIBrowserTest::SetUpInProcessBrowserTestFixture();
+    AddLibrary(FILE_PATH_LITERAL("settings_util.js"));
     AddLibrary(FILE_PATH_LITERAL("settings.js"));
   }
 
@@ -89,14 +90,22 @@
 #define MAYBE_TestSetBooleanPrefTriggers TestSetBooleanPrefTriggers
 #endif
 IN_PROC_BROWSER_TEST_F(SettingsWebUITest, MAYBE_TestSetBooleanPrefTriggers) {
+  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUISettingsURL));
   // This serves as an example of a very constrained test.
   ListValue true_list_value;
   true_list_value.Append(Value::CreateStringValue("browser.show_home_button"));
   true_list_value.Append(Value::CreateBooleanValue(true));
   true_list_value.Append(
       Value::CreateStringValue("Options_Homepage_HomeButton"));
-  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUISettingsURL));
+
   EXPECT_CALL(mock_core_options_handler_,
       HandleSetBooleanPref(Eq_ListValue(&true_list_value)));
   ASSERT_TRUE(RunJavascriptTest("testSetBooleanPrefTriggers"));
 }
+
+IN_PROC_BROWSER_TEST_F(SettingsWebUITest, testRefreshStaysOnCurrentPage) {
+  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUISettingsURL));
+  ASSERT_TRUE(RunJavascriptFunction("openUnderTheHood"));
+  ASSERT_TRUE(RunJavascriptFunction("refreshPage"));
+  ASSERT_TRUE(RunJavascriptTest("testPageIsUnderTheHood"));
+}