Provide ability for WebUIBrowserTests to run asynchronous tests.

chrome/browser/ui/webui/web_ui_browsertest.h

Index: chrome/browser/ui/webui/web_ui_browsertest.h
diff --git a/chrome/browser/ui/webui/web_ui_browsertest.h b/chrome/browser/ui/webui/web_ui_browsertest.h
index 5e483e6d69f3c90ef6b8cca33f9275c31e659fe0..fa84ef11df024d748c000d254bd7dba763f4dbcf 100644
--- a/chrome/browser/ui/webui/web_ui_browsertest.h
+++ b/chrome/browser/ui/webui/web_ui_browsertest.h
@@ -72,6 +72,17 @@ class WebUIBrowserTest
   bool RunJavascriptTest(const std::string& test_name,
                          const ConstValueVector& test_arguments);
 
+  // Runs a test that may include calls to functions in test_api.js, and waits
+  // for call to asyncTestDone().
+  bool RunJavascriptAsyncTest(const std::string& test_name);
+  bool RunJavascriptAsyncTest(const std::string& test_name,
+                              const base::Value& arg);
+  bool RunJavascriptAsyncTest(const std::string& test_name,
+                              const base::Value& arg1,
+                              const base::Value& arg2);
+  bool RunJavascriptAsyncTest(const std::string& test_name,
+                              const ConstValueVector& test_arguments);
+
   // Sends message through |preload_host| to preload javascript libraries and
   // sets the |libraries_preloaded| flag to prevent re-loading at next
   // javascript invocation.
@@ -126,10 +137,12 @@ class WebUIBrowserTest
   // logging an error message on failure, otherwise |function_name| is called
   // asynchronously. When |preload_host| is non-NULL, sends the javascript to
   // the RenderView for evaluation at the appropriate time before the onload
-  // call is made.
+  // call is made. When |is_async| is true, waits for asyncTestDone() in
+  // javascript code.
   bool RunJavascriptUsingHandler(const std::string& function_name,
                                  const ConstValueVector& function_arguments,
                                  bool is_test,
+                                 bool is_async,
                                  RenderViewHost* preload_host);
 
   // Attaches mock and test handlers.