Add an IPC to return the platform supported key-system names in Android.

components/cdm/renderer/android_key_systems.h

Index: components/cdm/renderer/android_key_systems.h
diff --git a/components/cdm/renderer/android_key_systems.h b/components/cdm/renderer/android_key_systems.h
new file mode 100644
index 0000000000000000000000000000000000000000..4b4b18a9243eebdd986394cbf5f232d8b3805adb
--- /dev/null
+++ b/components/cdm/renderer/android_key_systems.h
@@ -0,0 +1,21 @@
+// Copyright 2014 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 COMPONENTS_CDM_RENDERER_ANDROID_KEY_SYSTEMS_H_
+#define COMPONENTS_CDM_RENDERER_ANDROID_KEY_SYSTEMS_H_
+
+#include <vector>
+
+#include "content/public/renderer/key_system_info.h"
+
+namespace cdm {
+
+void AddAndroidWidevine(
+    std::vector<content::KeySystemInfo>* concrete_key_systems);
+void AddAndroidPlatformKeySystems(
+    std::vector<content::KeySystemInfo>* concrete_key_systems);

[xhwang, 2014/06/11 23:12:28]

Since these are in a new file. Add some comments about what they do.

[ycheo (away), 2014/06/12 02:02:45]

Done.

+
+}  // namespace cdm
+
+#endif  // COMPONENTS_CDM_RENDERER_ANDROID_KEY_SYSTEMS_H_