Convert the media and audio UI test to a browser_test. browser_tests are sharded and run quicker, a…

content/test/layout_browsertest.h

Index: content/test/layout_browsertest.h
===================================================================
--- content/test/layout_browsertest.h	(revision 129871)
+++ content/test/layout_browsertest.h	(working copy)
@@ -34,6 +34,8 @@
   void AddResourceForLayoutTest(const FilePath& parent_dir,
                                 const FilePath& resource_name);
 
+  void set_wait_until_done(bool value) { wait_until_done_ = value; }
+
  private:
   void RunLayoutTestInternal(const std::string& test_case_file_name,
                              const GURL& url);
@@ -49,6 +51,9 @@
   FilePath rebase_result_win_dir_;
   ScopedTempDir scoped_temp_dir_;
   int port_;  // -2 means no port.  -1 means random.
+  // By default, tests will wait until layoutTestController.notifyDone() is
+  // called.
+  bool wait_until_done_;
   scoped_ptr<LayoutTestHttpServer> test_http_server_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessBrowserLayoutTest);