BrowserMediaPlayerManager manages MediaKeys objects.

media/base/android/cdm_factory_android.cc

+// 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.
+
+#include "media/base/android/cdm_factory.h"
+
+#include "base/command_line.h"
+#include "media/base/android/media_drm_bridge.h"
+#include "media/base/media_switches.h"
+
+namespace media {
+
+scoped_ptr<MediaKeys> CreateCdm(const std::string& key_system,
+                                const SessionCreatedCB& session_created_cb,
+                                const SessionMessageCB& session_message_cb,
+                                const SessionReadyCB& session_ready_cb,
+                                const SessionClosedCB& session_closed_cb,
+                                const SessionErrorCB& session_error_cb) {
+  if (!MediaDrmBridge::IsKeySystemSupported(key_system)) {
+    NOTREACHED() << "Unsupported key system: " << key_system;
+    return scoped_ptr<MediaKeys>();
+  }
+
+  scoped_ptr<MediaDrmBridge> cdm(MediaDrmBridge::Create(key_system,
+                                                        session_created_cb,
+                                                        session_message_cb,
+                                                        session_ready_cb,
+                                                        session_closed_cb,
+                                                        session_error_cb));
+
+  // TODO(xhwang/ddorwin): Pass the security level from key system.
+  MediaDrmBridge::SecurityLevel security_level =
+      MediaDrmBridge::SECURITY_LEVEL_3;
+  if (CommandLine::ForCurrentProcess()
+          ->HasSwitch(switches::kMediaDrmEnableNonCompositing)) {
+    security_level = MediaDrmBridge::SECURITY_LEVEL_1;
+  }
+  if (!cdm->SetSecurityLevel(security_level)) {
+    DVLOG(1) << "failed to set security level " << security_level;
+    return scoped_ptr<MediaKeys>();
+  }
+
+  return cdm.PassAs<MediaKeys>();
+}
+
+}  // namespace media