Motown: Improvements to packet definition

services/media/framework_mojo/mojo_producer.h

Index: services/media/framework_mojo/mojo_producer.h
diff --git a/services/media/framework_mojo/mojo_producer.h b/services/media/framework_mojo/mojo_producer.h
index 2fb252e02c22727c02087ec89f0a5565ee6fd117..5679b7cb127f6fe14a85b4770e071759b11cfd50 100644
--- a/services/media/framework_mojo/mojo_producer.h
+++ b/services/media/framework_mojo/mojo_producer.h
@@ -45,7 +45,7 @@ class MojoProducer : public MediaProducer, public ActiveSink {
 
   // Gets the first presentation time seen on any packet after the most recent
   // flush or, if there has never been a flush, the first packet supplied.
-  int64_t GetFirstPresentationTimeSinceFlush();
+  int64_t GetFirstPtsSinceFlush();
 
   // ActiveSink implementation.
   PayloadAllocator* allocator() override;
@@ -89,8 +89,7 @@ class MojoProducer : public MediaProducer, public ActiveSink {
   bool end_of_stream_= false;
   DemandCallback demand_callback_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-  int64_t first_presentation_time_since_flush_ =
-      Packet::kUnknownPresentationTime;
+  int64_t first_pts_since_flush_ = Packet::kUnknownPts;
   // TODO(dalesat): Base this logic on presentation time or duration.
   uint32_t max_pushes_outstanding_ = 0;
   uint32_t current_pushes_outstanding_ = 0;