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

content/browser/webui/web_ui_browsertest.cc

Index: content/browser/webui/web_ui_browsertest.cc
===================================================================
--- content/browser/webui/web_ui_browsertest.cc	(revision 80324)
+++ content/browser/webui/web_ui_browsertest.cc	(working copy)
@@ -19,7 +19,7 @@
 WebUIBrowserTest::~WebUIBrowserTest() {}
 
 bool WebUIBrowserTest::RunJavascriptFunction(const std::string& function_name) {
-  return RunJavascriptUsingHandler(function_name, false);
+  return RunJavascriptUsingHandler(function_name, true);
 }
 
 bool WebUIBrowserTest::RunJavascriptTest(const std::string& test_name) {
@@ -68,7 +68,7 @@
 
   if (!function_name.empty()) {
     std::string called_function = is_test ? "runTest(" + function_name + ");" :
-                                            function_name + "()";
+                                            function_name + "();";
     content.append(called_function);
   }
   SetupHandlers();