Chromecast: adds BrowserCdmFactory that delegates to the platform.

chromecast/browser/media/cast_browser_cdm_factory.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 "chromecast/browser/media/cast_browser_cdm_factory.h"
+
+namespace chromecast {
+namespace media {
+
+scoped_ptr< ::media::BrowserCdm> CastBrowserCdmFactory::CreateBrowserCdm(
+    const std::string& key_system_name,
+    const ::media::BrowserCdm::SessionCreatedCB& session_created_cb,
+    const ::media::BrowserCdm::SessionMessageCB& session_message_cb,
+    const ::media::BrowserCdm::SessionReadyCB& session_ready_cb,
+    const ::media::BrowserCdm::SessionClosedCB& session_closed_cb,
+    const ::media::BrowserCdm::SessionErrorCB& session_error_cb) {
+  CastKeySystem key_system(GetKeySystemByName(key_system_name));
+
+  // TODO(gunsch): handle ClearKey decryption. See crbug.com/441957
+
+  scoped_ptr< ::media::BrowserCdm> platform_cdm(
+      CreatePlatformBrowserCdm(key_system,
+                               session_created_cb,
+                               session_message_cb,
+                               session_ready_cb,
+                               session_closed_cb,
+                               session_error_cb));
+  if (platform_cdm) {
+    return platform_cdm.Pass();
+  }
+
+  LOG(INFO) << "No matching key system found.";
+  return scoped_ptr< ::media::BrowserCdm>();
+}
+
+}  // namespace media
+}  // namespace chromecast