Adds MediaClientAndroid to support embedder/MediaDrmBridge interaction.

chromecast/media/cdm/playready_drm_delegate_android.h

Index: chromecast/media/cdm/playready_drm_delegate_android.h
diff --git a/chromecast/media/cdm/playready_drm_delegate_android.h b/chromecast/media/cdm/playready_drm_delegate_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..1f42a6cc9454041035cc1e019e59cc7cd3432f82
--- /dev/null
+++ b/chromecast/media/cdm/playready_drm_delegate_android.h
@@ -0,0 +1,39 @@
+// Copyright 2015 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 CHROMECAST_MEDIA_CDM_PLAYREADY_DRM_DELEGATE_ANDROID_H_
+#define CHROMECAST_MEDIA_CDM_PLAYREADY_DRM_DELEGATE_ANDROID_H_
+
+#include "base/macros.h"
+#include "media/base/android/media_drm_bridge.h"
+
+namespace chromecast {
+namespace media {
+
+class PlayreadyDrmDelegateAndroid : public ::media::MediaDrmBridge::Delegate {
+ public:
+  // Installs PlayreadyDrmDelegateAndroid into MediaDrmBridge, associated with
+  // com.chromecast.playready.
+  static void Install();
+
+ private:
+  PlayreadyDrmDelegateAndroid();
+  ~PlayreadyDrmDelegateAndroid() override;
+
+  // ::media::MediaDrmBridge::Delegate implementation:
+  bool OnCreateSession(
+      const ::media::EmeInitDataType init_data_type,
+      const uint8* init_data,
+      int init_data_length,
+      std::vector<uint8>& init_data_out,
+      std::vector<std::string>& optional_parameters_out) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PlayreadyDrmDelegateAndroid);
+};
+
+}  // namespace media
+}  // namespace chromecast
+
+#endif  // CHROMECAST_MEDIA_CDM_PLAYREADY_DRM_DELEGATE_ANDROID_H_