Move MediaBufferXXX from foundation to libmediaextractor

Removed MediaBufferBase in favor of MediaBufferHolder
which contains a MediaBuffer inside. Instead of set/getMediaBufferBase,
now it set/finds MediaBufferHolder in ABuffer->meta().

Test: build. pass MediaPlayerDrmTest and EncodeDecodeTest.
Bug: 67908542
Change-Id: Icb4f7ac350a7876f5e4596bae8be2a9e95956c2f
diff --git a/media/libmedia/nuplayer2/GenericSource.cpp b/media/libmedia/nuplayer2/GenericSource.cpp
index c0b81fb..6d5b14d 100644
--- a/media/libmedia/nuplayer2/GenericSource.cpp
+++ b/media/libmedia/nuplayer2/GenericSource.cpp
@@ -24,6 +24,7 @@
 #include <binder/IServiceManager.h>
 #include <cutils/properties.h>
 #include <media/DataSource.h>
+#include <media/MediaBufferHolder.h>
 #include <media/IMediaExtractorService.h>
 #include <media/MediaHTTPService.h>
 #include <media/MediaExtractor.h>
@@ -1167,8 +1168,7 @@
 
         // data is already provided in the buffer
         ab = new ABuffer(NULL, mb->range_length());
-        mb->add_ref();
-        ab->setMediaBufferBase(mb);
+        ab->meta()->setObject("mediaBufferHolder", new MediaBufferHolder(mb));
 
         // Modular DRM: Required b/c of the above add_ref.
         // If ref>0, there must be an observer, or it'll crash at release().