audio policy: pass session ID to capture activity methods

Indicate the audio session ID when calling getInput(),
startInput(), stopInput(), releaseInput().

Bug: 12378680.
Change-Id: I763793752f93e2f4e1445a5ab217c895af011038
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 0ef5bb8..2e2f533 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -5649,7 +5649,7 @@
         status_t status = NO_ERROR;
         if (recordTrack->isExternalTrack()) {
             mLock.unlock();
-            status = AudioSystem::startInput(mId);
+            status = AudioSystem::startInput(mId, (audio_session_t)recordTrack->sessionId());
             mLock.lock();
             // FIXME should verify that recordTrack is still in mActiveTracks
             if (status != NO_ERROR) {
@@ -5684,7 +5684,7 @@
 
 startError:
     if (recordTrack->isExternalTrack()) {
-        AudioSystem::stopInput(mId);
+        AudioSystem::stopInput(mId, (audio_session_t)recordTrack->sessionId());
     }
     recordTrack->clearSyncStartEvent();
     // FIXME I wonder why we do not reset the state here?