Add PlayerTracker and BrowserCdm interfaces.

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/cdm_factory.h"
-
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "media/base/android/media_drm_bridge.h"
-#include "media/base/media_switches.h"
-
-namespace media {
-
-scoped_ptr<MediaKeys> CreateBrowserCdm(
-    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));
-  if (!cdm) {
-    NOTREACHED() << "MediaDrmBridge cannot be created for " << key_system;
-    return scoped_ptr<MediaKeys>();
-  }
-
-  // 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