Rename Buffer{Producer, Consumer} to {Producer, Consumer}Buffer

Bug: 116855254
Test: Build
Change-Id: Ief03795d2093f817f135d33eb252e1e040e150f7
diff --git a/services/vr/bufferhubd/producer_channel.cpp b/services/vr/bufferhubd/producer_channel.cpp
index 5c484b8..2a6e9da 100644
--- a/services/vr/bufferhubd/producer_channel.cpp
+++ b/services/vr/bufferhubd/producer_channel.cpp
@@ -455,7 +455,7 @@
   uint32_t buffer_state = buffer_state_->load(std::memory_order_acquire);
   if (!BufferHubDefs::IsClientGained(
       buffer_state, BufferHubDefs::kFirstClientStateMask)) {
-    // Can only detach a BufferProducer when it's in gained state.
+    // Can only detach a ProducerBuffer when it's in gained state.
     ALOGW(
         "ProducerChannel::OnProducerDetach: The buffer (id=%d, state=%"
         PRIx32