Audio: Use uid_t for uids

Test: Power manager shows correct uids for audio
Bug: 32713790
Change-Id: If5337e17283268f74dc0f00cc66ece9153d680ef
diff --git a/include/media/AudioRecord.h b/include/media/AudioRecord.h
index 63076e9..f7eb397 100644
--- a/include/media/AudioRecord.h
+++ b/include/media/AudioRecord.h
@@ -180,7 +180,7 @@
                                     audio_session_t sessionId = AUDIO_SESSION_ALLOCATE,
                                     transfer_type transferType = TRANSFER_DEFAULT,
                                     audio_input_flags_t flags = AUDIO_INPUT_FLAG_NONE,
-                                    int uid = -1,
+                                    uid_t uid = AUDIO_UID_INVALID,
                                     pid_t pid = -1,
                                     const audio_attributes_t* pAttributes = NULL);
 
@@ -218,7 +218,7 @@
                             audio_session_t sessionId = AUDIO_SESSION_ALLOCATE,
                             transfer_type transferType = TRANSFER_DEFAULT,
                             audio_input_flags_t flags = AUDIO_INPUT_FLAG_NONE,
-                            int uid = -1,
+                            uid_t uid = AUDIO_UID_INVALID,
                             pid_t pid = -1,
                             const audio_attributes_t* pAttributes = NULL);
 
@@ -642,7 +642,7 @@
 
     sp<DeathNotifier>       mDeathNotifier;
     uint32_t                mSequence;              // incremented for each new IAudioRecord attempt
-    int                     mClientUid;
+    uid_t                   mClientUid;
     pid_t                   mClientPid;
     audio_attributes_t      mAttributes;
 
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index 399154c..7c5686a 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -233,7 +233,7 @@
                                     audio_session_t sessionId  = AUDIO_SESSION_ALLOCATE,
                                     transfer_type transferType = TRANSFER_DEFAULT,
                                     const audio_offload_info_t *offloadInfo = NULL,
-                                    int uid = -1,
+                                    uid_t uid = AUDIO_UID_INVALID,
                                     pid_t pid = -1,
                                     const audio_attributes_t* pAttributes = NULL,
                                     bool doNotReconnect = false,
@@ -263,7 +263,7 @@
                                     audio_session_t sessionId   = AUDIO_SESSION_ALLOCATE,
                                     transfer_type transferType = TRANSFER_DEFAULT,
                                     const audio_offload_info_t *offloadInfo = NULL,
-                                    int uid = -1,
+                                    uid_t uid = AUDIO_UID_INVALID,
                                     pid_t pid = -1,
                                     const audio_attributes_t* pAttributes = NULL,
                                     bool doNotReconnect = false,
@@ -309,7 +309,7 @@
                             audio_session_t sessionId  = AUDIO_SESSION_ALLOCATE,
                             transfer_type transferType = TRANSFER_DEFAULT,
                             const audio_offload_info_t *offloadInfo = NULL,
-                            int uid = -1,
+                            uid_t uid = AUDIO_UID_INVALID,
                             pid_t pid = -1,
                             const audio_attributes_t* pAttributes = NULL,
                             bool doNotReconnect = false,
@@ -1130,7 +1130,7 @@
 
     sp<DeathNotifier>       mDeathNotifier;
     uint32_t                mSequence;              // incremented for each new IAudioTrack attempt
-    int                     mClientUid;
+    uid_t                   mClientUid;
     pid_t                   mClientPid;
 
     sp<AudioSystem::AudioDeviceCallback> mDeviceCallback;