Deprecate producer/consumer usage: Step 1

Clean up producer/consumer usage from IonBuffer.

Bug: 37881101
Test: Build, flash, ran particles.apk
Change-Id: I66a8c4db2348b014a7b458b69157ed7c150112e1
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h
index c772ed3..dbd4110 100644
--- a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h
@@ -113,8 +113,10 @@
   uint32_t format() const { return slices_[0].format(); }
   uint32_t usage() const { return slices_[0].usage(); }
   uint32_t layer_count() const { return slices_[0].layer_count(); }
-  uint64_t producer_usage() const { return slices_[0].producer_usage(); }
-  uint64_t consumer_usage() const { return slices_[0].consumer_usage(); }
+
+  // TODO(b/37881101) Clean up producer/consumer usage.
+  uint64_t producer_usage() const { return slices_[0].usage(); }
+  uint64_t consumer_usage() const { return slices_[0].usage(); }
 
  protected:
   explicit BufferHubBuffer(LocalChannelHandle channel);