Encrypted Media: Implement IPC based SetCdm().

content/renderer/media/android/renderer_media_player_manager.cc

 // 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.
 
 #include "content/renderer/media/android/renderer_media_player_manager.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "content/common/media/cdm_messages.h"
 #include "content/common/media/media_player_messages_android.h"
@@ skipping 221 matching lines @@
                                                  blink::WebFrame* frame) {
   pending_fullscreen_frame_ = frame;
   Send(new MediaPlayerHostMsg_EnterFullscreen(routing_id(), player_id));
 }
 
 void RendererMediaPlayerManager::ExitFullscreen(int player_id) {
   pending_fullscreen_frame_ = NULL;
   Send(new MediaPlayerHostMsg_ExitFullscreen(routing_id(), player_id));
 }
 
+void RendererMediaPlayerManager::SetCdm(int player_id, int cdm_id) {
+  if (cdm_id == kInvalidCdmId)
+    return;
+  Send(new MediaPlayerHostMsg_SetCdm(routing_id(), player_id, cdm_id));
+}
+
 void RendererMediaPlayerManager::InitializeCdm(int cdm_id,
                                                ProxyMediaKeys* media_keys,
                                                const std::string& key_system,
                                                const GURL& frame_url) {
+  DCHECK_NE(cdm_id, kInvalidCdmId);
   RegisterMediaKeys(cdm_id, media_keys);
   Send(new CdmHostMsg_InitializeCdm(
       routing_id(), cdm_id, key_system, frame_url));
 }
 
 void RendererMediaPlayerManager::CreateSession(
     int cdm_id,
     uint32 session_id,
     CdmHostMsg_CreateSession_ContentType content_type,
     const std::vector<uint8>& init_data) {
+  DCHECK(GetMediaKeys(cdm_id)) << "|cdm_id| not registered.";
   Send(new CdmHostMsg_CreateSession(
       routing_id(), cdm_id, session_id, content_type, init_data));
 }
 
 void RendererMediaPlayerManager::UpdateSession(
     int cdm_id,
     uint32 session_id,
     const std::vector<uint8>& response) {
+  DCHECK(GetMediaKeys(cdm_id)) << "|cdm_id| not registered.";
   Send(
       new CdmHostMsg_UpdateSession(routing_id(), cdm_id, session_id, response));
 }
 
 void RendererMediaPlayerManager::ReleaseSession(int cdm_id, uint32 session_id) {
+  DCHECK(GetMediaKeys(cdm_id)) << "|cdm_id| not registered.";
   Send(new CdmHostMsg_ReleaseSession(routing_id(), cdm_id, session_id));
 }
 
 void RendererMediaPlayerManager::DestroyCdm(int cdm_id) {
+  DCHECK(GetMediaKeys(cdm_id)) << "|cdm_id| not registered.";
   Send(new CdmHostMsg_DestroyCdm(routing_id(), cdm_id));
 }
 
 void RendererMediaPlayerManager::OnSessionCreated(
     int cdm_id,
     uint32 session_id,
     const std::string& web_session_id) {
   if (web_session_id.length() > kMaxWebSessionIdLength) {
     OnSessionError(cdm_id, session_id, media::MediaKeys::kUnknownError, 0);
     return;
@@ skipping 144 matching lines @@
 
     if (player && player->hasVideo()) {
       if (player->UpdateBoundaryRectangle())
         (*changes)[player_it->first] = player->GetBoundaryRectangle();
     }
   }
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content