Bind BrowserCdmManager callbacks to UI thread before passing to CDM.

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"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "chromecast/browser/media/cma_message_loop.h"
 #include "chromecast/media/cdm/browser_cdm_cast.h"
+#include "media/base/bind_to_current_loop.h"
+#include "media/base/cdm_key_information.h"
 
 namespace chromecast {
 namespace media {
 
 scoped_ptr<::media::BrowserCdm> CastBrowserCdmFactory::CreateBrowserCdm(
     const std::string& key_system_name,
     bool use_secure_surface,
     const ::media::SessionMessageCB& session_message_cb,
     const ::media::SessionClosedCB& session_closed_cb,
     const ::media::LegacySessionErrorCB& legacy_session_error_cb,
     const ::media::SessionKeysChangeCB& session_keys_change_cb,
     const ::media::SessionExpirationUpdateCB& session_expiration_update_cb) {
   DCHECK(!use_secure_surface) << "Chromecast does not use |use_secure_surface|";
 
   CastKeySystem key_system(GetKeySystemByName(key_system_name));
 
   scoped_ptr<chromecast::media::BrowserCdmCast> browser_cdm;
   if (key_system == chromecast::media::KEY_SYSTEM_CLEAR_KEY) {
     // TODO(gunsch): handle ClearKey decryption. See crbug.com/441957
   } else {
     browser_cdm = CreatePlatformBrowserCdm(key_system);
   }
 
   if (browser_cdm) {
     CmaMessageLoop::GetMessageLoopProxy()->PostTask(
         FROM_HERE,
         base::Bind(&BrowserCdmCast::Initialize,
-                   base::Unretained(browser_cdm.get()), session_message_cb,
-                   session_closed_cb, legacy_session_error_cb,
-                   session_keys_change_cb, session_expiration_update_cb));
+                   base::Unretained(browser_cdm.get()),
+                   ::media::BindToCurrentLoop(session_message_cb),
+                   ::media::BindToCurrentLoop(session_closed_cb),
+                   ::media::BindToCurrentLoop(legacy_session_error_cb),
+                   ::media::BindToCurrentLoop(session_keys_change_cb),
+                   ::media::BindToCurrentLoop(session_expiration_update_cb)));
     return make_scoped_ptr(
         new BrowserCdmCastUi(browser_cdm.Pass(),
                              CmaMessageLoop::GetMessageLoopProxy()));
   }
 
   LOG(INFO) << "No matching key system found.";
   return scoped_ptr< ::media::BrowserCdm>();
 }
 
 }  // namespace media
 }  // namespace chromecast