audio: Make renamings suggested by reviewers

Rename DriverInterface::getPosition -> refinePosition. This reflects
the fact that the driver may provide more precise position, however
this is an optional operation.

Rename StreamIn/Out::mContext -> mContextInstance. This is
to emphasize that StreamIn/Out actually own the context and they
hold the real context instance, not just a reference/pointer
to it, like other classes involved in the inheritance chain.

Bug: 286914845
Test: atest VtsHalAudioCoreTargetTest
Change-Id: Id7159f9bf3ee020dc7cf594ec35f5d59d23d7e31
diff --git a/audio/aidl/default/Stream.cpp b/audio/aidl/default/Stream.cpp
index c5b25d6..7a617c9 100644
--- a/audio/aidl/default/Stream.cpp
+++ b/audio/aidl/default/Stream.cpp
@@ -117,7 +117,7 @@
     if (isConnected) {
         reply->observable.frames = mContext->getFrameCount();
         reply->observable.timeNs = ::android::elapsedRealtimeNano();
-        if (auto status = mDriver->getPosition(&reply->observable); status == ::android::OK) {
+        if (auto status = mDriver->refinePosition(&reply->observable); status == ::android::OK) {
             return;
         }
     }
@@ -739,12 +739,12 @@
 }  // namespace
 
 StreamIn::StreamIn(StreamContext&& context, const std::vector<MicrophoneInfo>& microphones)
-    : mContext(std::move(context)), mMicrophones(transformMicrophones(microphones)) {
+    : mContextInstance(std::move(context)), mMicrophones(transformMicrophones(microphones)) {
     LOG(DEBUG) << __func__;
 }
 
 void StreamIn::defaultOnClose() {
-    mContext.reset();
+    mContextInstance.reset();
 }
 
 ndk::ScopedAStatus StreamIn::getActiveMicrophones(
@@ -800,12 +800,12 @@
 }
 
 StreamOut::StreamOut(StreamContext&& context, const std::optional<AudioOffloadInfo>& offloadInfo)
-    : mContext(std::move(context)), mOffloadInfo(offloadInfo) {
+    : mContextInstance(std::move(context)), mOffloadInfo(offloadInfo) {
     LOG(DEBUG) << __func__;
 }
 
 void StreamOut::defaultOnClose() {
-    mContext.reset();
+    mContextInstance.reset();
 }
 
 ndk::ScopedAStatus StreamOut::updateOffloadMetadata(