media: Add helper function to register pepper CDMs

chrome/browser/media/pepper_cdm_test_helper.h

+// Copyright 2016 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_BROWSER_MEDIA_PEPPER_CDM_TEST_HELPER_H_
+#define CHROME_BROWSER_MEDIA_PEPPER_CDM_TEST_HELPER_H_
+
+#include <string>
+
+#include "base/files/file_path.h"
+
+namespace base {
+class CommandLine;
+}
+
+// Platform-specific filename relative to kClearKeyCdmBaseDirectory.
+extern const char kClearKeyCdmAdapterFileName[];
+
+// Pepper type for Clear Key CDM.
+extern const char kClearKeyCdmPepperMimeType[];
+
+// Builds the string to pass to kRegisterPepperPlugins for a single
+// CDM using the provided parameters and a dummy version.
+// Multiple results may be passed to kRegisterPepperPlugins, separated by ",".
+// The CDM adapter should be located in |adapter_base_dir| in DIR_MODULE.

[Lei Zhang, 2016/05/18 00:53:11]

There's no |adapter_base_dir| param.

[xhwang, 2016/05/18 02:08:10]

Done.

+base::FilePath::StringType BuildPepperCdmRegistration(
+    const std::string& adapter_file_name,
+    const std::string& mime_type,
+    bool expect_adapter_exists = true);
+
+// Registers pepper CDM in |command_line|.
+void RegisterPepperCdm(base::CommandLine* command_line,
+                       const std::string& adapter_file_name,
+                       const std::string& mime_type,
+                       bool expect_adapter_exists = true);
+
+#endif  // CHROME_BROWSER_MEDIA_PEPPER_CDM_TEST_HELPER_H_