WeakPtr destruction order cleanup: media edition.

media/filters/decrypting_demuxer_stream.h

Index: media/filters/decrypting_demuxer_stream.h
diff --git a/media/filters/decrypting_demuxer_stream.h b/media/filters/decrypting_demuxer_stream.h
index aa9e897f226b0194492b3583cee03a5b333a1a21..6b29a21f5a1cd4b9dbe1c65986a193d90d97b453 100644
--- a/media/filters/decrypting_demuxer_stream.h
+++ b/media/filters/decrypting_demuxer_stream.h
@@ -99,8 +99,6 @@ class MEDIA_EXPORT DecryptingDemuxerStream : public DemuxerStream {
   void InitializeDecoderConfig();
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-  base::WeakPtrFactory<DecryptingDemuxerStream> weak_factory_;
-  base::WeakPtr<DecryptingDemuxerStream> weak_this_;
 
   State state_;
 
@@ -128,6 +126,10 @@ class MEDIA_EXPORT DecryptingDemuxerStream : public DemuxerStream {
   // decrypting again in case the newly added key is the correct decryption key.
   bool key_added_while_decrypt_pending_;
 
+  // NOTE: Weak pointers must be invalidated before all other member variables.
+  base::WeakPtrFactory<DecryptingDemuxerStream> weak_factory_;
+  base::WeakPtr<DecryptingDemuxerStream> weak_this_;
+
   DISALLOW_COPY_AND_ASSIGN(DecryptingDemuxerStream);
 };