Revert of Support casting for embedded YT videos

content/common/media/media_player_messages_android.h

Index: content/common/media/media_player_messages_android.h
diff --git a/content/common/media/media_player_messages_android.h b/content/common/media/media_player_messages_android.h
index 4548f0b849b05010f755cea891495490f86a2b8a..a5a8b7a0e07b5b39ff6983c0fc58635f271a1291 100644
--- a/content/common/media/media_player_messages_android.h
+++ b/content/common/media/media_player_messages_android.h
@@ -61,17 +61,6 @@
 IPC_STRUCT_TRAITS_END()
 
 IPC_ENUM_TRAITS(MediaPlayerHostMsg_Initialize_Type)
-
-// Parameters to describe a media player
-IPC_STRUCT_BEGIN(MediaPlayerHostMsg_Initialize_Params)
-  IPC_STRUCT_MEMBER(MediaPlayerHostMsg_Initialize_Type, type)
-  IPC_STRUCT_MEMBER(base::SharedMemoryHandle, metafile_data_handle)
-  IPC_STRUCT_MEMBER(int, player_id)
-  IPC_STRUCT_MEMBER(int, demuxer_client_id)
-  IPC_STRUCT_MEMBER(GURL, url)
-  IPC_STRUCT_MEMBER(GURL, first_party_for_cookies)
-  IPC_STRUCT_MEMBER(GURL, frame_url)
-IPC_STRUCT_END()
 
 // Chrome for Android seek message sequence is:
 // 1. Renderer->Browser MediaPlayerHostMsg_Seek
@@ -209,10 +198,21 @@
 IPC_MESSAGE_ROUTED1(MediaPlayerHostMsg_DestroyMediaPlayer,
                     int /* player_id */)
 
-// Initialize a media player object.
-IPC_MESSAGE_ROUTED1(
-    MediaPlayerHostMsg_Initialize,
-    MediaPlayerHostMsg_Initialize_Params);
+// Initialize a media player object with the given type and player_id. The other
+// parameters are used depending on the type of player.
+//
+// url: the URL to load when initializing a URL player.
+//
+// first_party_for_cookies: the cookie store to use when loading a URL.
+//
+// demuxer_client_id: the demuxer associated with this player when initializing
+// a media source player.
+IPC_MESSAGE_ROUTED5(MediaPlayerHostMsg_Initialize,
+                    MediaPlayerHostMsg_Initialize_Type /* type */,
+                    int /* player_id */,
+                    GURL /* url */,
+                    GURL /* first_party_for_cookies */,
+                    int /* demuxer_client_id */)
 
 // Pause the player.
 IPC_MESSAGE_ROUTED2(MediaPlayerHostMsg_Pause,