Populate canPlayType to renderer

chrome/browser/media/encrypted_media_message_filter_android.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 CHROME_BROWSER_MEDIA_ENCRYPTED_MEDIA_MESSAGE_FILTER_ANDROID_H_
+#define CHROME_BROWSER_MEDIA_ENCRYPTED_MEDIA_MESSAGE_FILTER_ANDROID_H_
+
+#include "base/basictypes.h"
+#include "content/public/browser/browser_message_filter.h"
+
+namespace android {
+struct SupportedKeySystemRequest;
+struct SupportedKeySystemResponse;
+}
+
+namespace chrome {
+
+// Message filter for EME on android. It is responsible for getting the
+// SupportedKeySystems information and passing it back to renderer.
+class EncryptedMediaMessageFilterAndroid
+    : public content::BrowserMessageFilter {
+ public:
+  EncryptedMediaMessageFilterAndroid();
+
+ private:
+  virtual ~EncryptedMediaMessageFilterAndroid();
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok) OVERRIDE;
+  virtual void OverrideThreadForMessage(
+      const IPC::Message& message,
+      content::BrowserThread::ID* thread) OVERRIDE;
+
+  // Retrieve the supported key systems.
+  void OnGetSupportedKeySystems(
+      const android::SupportedKeySystemRequest& request,
+      android::SupportedKeySystemResponse* response);
+
+  DISALLOW_COPY_AND_ASSIGN(EncryptedMediaMessageFilterAndroid);
+};
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_MEDIA_ENCRYPTED_MEDIA_MESSAGE_FILTER_ANDROID_H_