Generalize AesDecryptor to make it more spec compliant.

media/filters/chunk_demuxer.cc

Index: media/filters/chunk_demuxer.cc
diff --git a/media/filters/chunk_demuxer.cc b/media/filters/chunk_demuxer.cc
index 8862ad15fa50cf4f3d07f7716a68f017be04c686..0806dcd07922274bd1791be4429d4f4491c3fcb9 100644
--- a/media/filters/chunk_demuxer.cc
+++ b/media/filters/chunk_demuxer.cc
@@ -504,7 +504,7 @@ ChunkDemuxer::Status ChunkDemuxer::AddId(const std::string& id,
       base::Bind(&ChunkDemuxer::OnNewConfigs, base::Unretained(this)),
       audio_cb,
       video_cb,
-      base::Bind(&ChunkDemuxer::OnKeyNeeded, base::Unretained(this)));
+      base::Bind(&ChunkDemuxer::OnNeedKey, base::Unretained(this)));
 
   return kOk;
 }
@@ -800,9 +800,9 @@ bool ChunkDemuxer::OnVideoBuffers(const StreamParser::BufferQueue& buffers) {
   return true;
 }
 
-bool ChunkDemuxer::OnKeyNeeded(scoped_array<uint8> init_data,
-                               int init_data_size) {
-  client_->KeyNeeded(init_data.Pass(), init_data_size);
+bool ChunkDemuxer::OnNeedKey(scoped_array<uint8> init_data,
+                             int init_data_size) {
+  client_->DemuxerNeedKey(init_data.Pass(), init_data_size);
   return true;
 }