media: Allow config change between clear and encrypted streams

content/browser/media/media_browsertest.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_MEDIA_MEDIA_BROWSERTEST_H_
 #define CONTENT_BROWSER_MEDIA_MEDIA_BROWSERTEST_H_
 
 #include <string>
 
 #include "base/strings/string_split.h"
 #include "content/public/test/content_browser_test.h"
 
 namespace content {
 
 class TitleWatcher;
 
 // A base class for media related browser tests.
 class MediaBrowserTest : public ContentBrowserTest {
  public:
   // Common test results.
   static const char kEnded[];
   static const char kError[];
+  static const char kErrorEvent[];
   static const char kFailed[];
 
   // ContentBrowserTest implementation.
   void SetUpCommandLine(base::CommandLine* command_line) override;
 
   // Runs a html page with a list of URL query parameters.
   // If http is true, the test starts a local http test server to load the test
   // page, otherwise a local file URL is loaded inside the content shell.
   // It uses RunTest() to check for expected test output.
   void RunMediaTestPage(const std::string& html_page,
                         const base::StringPairs& query_params,
                         const std::string& expected_title,
                         bool http);
 
   // Opens a URL and waits for the document title to match any of the waited for
   // titles. Returns the matching title.
   std::string RunTest(const GURL& gurl, const std::string& expected_title);
 
   // Adds titles that RunTest() should wait for.
   virtual void AddTitlesToAwait(content::TitleWatcher* title_watcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_MEDIA_BROWSERTEST_H_