Downloads and passes the poster image to Android

content/browser/media/android/browser_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/browser/media/android/browser_media_player_manager.h"
 
 #include "base/command_line.h"
 #include "content/browser/android/content_view_core_impl.h"
 #include "content/browser/media/android/browser_demuxer_android.h"
 #include "content/browser/media/android/media_resource_getter_impl.h"
@@ skipping 114 matching lines @@
 bool BrowserMediaPlayerManager::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(BrowserMediaPlayerManager, msg)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_EnterFullscreen, OnEnterFullscreen)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_ExitFullscreen, OnExitFullscreen)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_Initialize, OnInitialize)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_Start, OnStart)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_Seek, OnSeek)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_Pause, OnPause)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_SetVolume, OnSetVolume)
+    IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_SetPoster, OnSetPoster)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_Release, OnReleaseResources)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_DestroyMediaPlayer, OnDestroyPlayer)
     IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_DestroyAllMediaPlayers,
                         DestroyAllMediaPlayers)
     IPC_MESSAGE_HANDLER(MediaKeysHostMsg_InitializeCDM,
                         OnInitializeCDM)
     IPC_MESSAGE_HANDLER(MediaKeysHostMsg_CreateSession, OnCreateSession)
     IPC_MESSAGE_HANDLER(MediaKeysHostMsg_UpdateSession, OnUpdateSession)
     IPC_MESSAGE_HANDLER(MediaKeysHostMsg_ReleaseSession, OnReleaseSession)
     IPC_MESSAGE_HANDLER(MediaKeysHostMsg_CancelAllPendingSessionCreations,
@@ skipping 415 matching lines @@
   if (player)
     player->Pause(is_media_related_action);
 }
 
 void BrowserMediaPlayerManager::OnSetVolume(int player_id, double volume) {
   MediaPlayerAndroid* player = GetPlayer(player_id);
   if (player)
     player->SetVolume(volume);
 }
 
+void BrowserMediaPlayerManager::OnSetPoster(int player_id, const GURL& url) {
+  // To be overridden by subclasses.

[palmer, 2014/02/13 21:52:27]

Do any such subclasses exist now?

Does it make sense to enforce that the poster URL have the same or a similar
origin, or the same URL scheme? (I am not sure.)

[acolwell GONE FROM CHROMIUM, 2014/02/13 22:17:03]

Yes. In the internal Android UI codebase.
No. This is an image URL so it can be cross-origin. This layer shouldn't be
enforcing anything. If any enforcement needed to happen, it should be Blink
before it reaches this code or the resource loading code downstream of this
code.

+}
+
 void BrowserMediaPlayerManager::OnReleaseResources(int player_id) {
   MediaPlayerAndroid* player = GetPlayer(player_id);
   if (player)
     player->Release();
 
 #if defined(VIDEO_HOLE)
   WebContentsViewAndroid* view =
       static_cast<WebContentsViewAndroid*>(web_contents_->GetView());
   if (view)
     view->NotifyExternalSurface(player_id, false, gfx::RectF());
@@ skipping 265 matching lines @@
   if (pending_fullscreen_player_id_ != media_keys_id)
     return;
 
   pending_fullscreen_player_id_ = -1;
   MediaPlayerAndroid* player = GetPlayer(media_keys_id);
   if (player->IsPlaying())
     OnProtectedSurfaceRequested(media_keys_id);
 }
 
 }  // namespace content