media: Use bundled Widevine CDM in encrypted media browser tests

chrome/test/base/test_launcher_utils.h

 // Copyright (c) 2011 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 CHROME_TEST_BASE_TEST_LAUNCHER_UTILS_H_
 #define CHROME_TEST_BASE_TEST_LAUNCHER_UTILS_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 
 namespace base {
 class CommandLine;
 }
 
 // A set of utilities for test code that launches separate processes.
 namespace test_launcher_utils {
 
 // Appends browser switches to provided |command_line| to be used
 // when running under tests.
 void PrepareBrowserCommandLineForTests(base::CommandLine* command_line);
 
+// Appends all switches from |in_command_line| to |out_command_line| except for
+// |switch_to_remove|.
+// TODO(xhwang): Add CommandLine::RemoveSwitch() so we don't need this hack.
+void RemoveCommandLineSwitch(const base::CommandLine& in_command_line,
+                             const std::string& switch_to_remove,
+                             base::CommandLine* out_command_line);
+
 // Overrides the current process' user data dir.
 bool OverrideUserDataDir(
     const base::FilePath& user_data_dir) WARN_UNUSED_RESULT;
 
 }  // namespace test_launcher_utils
 
 #endif  // CHROME_TEST_BASE_TEST_LAUNCHER_UTILS_H_