MSE: Plumb ChunkDemuxer appendData failures into append Error algorithm

media/blink/websourcebuffer_impl.h

Index: media/blink/websourcebuffer_impl.h
diff --git a/media/blink/websourcebuffer_impl.h b/media/blink/websourcebuffer_impl.h
index 534dcba4aef607829771d2261573c9cf8eeee6b9..043b717abeb8f74e47eac1f6750ea76451cee2a4 100644
--- a/media/blink/websourcebuffer_impl.h
+++ b/media/blink/websourcebuffer_impl.h
@@ -30,10 +30,9 @@ class WebSourceBufferImpl : public blink::WebSourceBuffer {
   blink::WebTimeRanges buffered() override;
   bool evictCodedFrames(double currentPlaybackTime,
                         size_t newDataSize) override;
-  void append(
-      const unsigned char* data,
-      unsigned length,
-      double* timestamp_offset) override;
+  bool append(const unsigned char* data,
+              unsigned length,
+              double* timestamp_offset) override;
   void resetParserState() override;
   void remove(double start, double end) override;
   bool setTimestampOffset(double offset) override;