Update language to comply with Android's inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code
for reference.

Test: m ; atest TetheringTests
Bug: 161896447
Change-Id: Idc58697c72fb00896bee00185fefc50c1a24dd35
diff --git a/Tethering/src/android/net/ip/IpServer.java b/Tethering/src/android/net/ip/IpServer.java
index a61fcfb..543ac19 100644
--- a/Tethering/src/android/net/ip/IpServer.java
+++ b/Tethering/src/android/net/ip/IpServer.java
@@ -196,15 +196,19 @@
     public static final int CMD_TETHER_UNREQUESTED          = BASE_IPSERVER + 2;
     // notification that this interface is down
     public static final int CMD_INTERFACE_DOWN              = BASE_IPSERVER + 3;
-    // notification from the master SM that it had trouble enabling IP Forwarding
+    // notification from the {@link Tethering.TetherMainSM} that it had trouble enabling IP
+    // Forwarding
     public static final int CMD_IP_FORWARDING_ENABLE_ERROR  = BASE_IPSERVER + 4;
-    // notification from the master SM that it had trouble disabling IP Forwarding
+    // notification from the {@link Tethering.TetherMainSM} SM that it had trouble disabling IP
+    // Forwarding
     public static final int CMD_IP_FORWARDING_DISABLE_ERROR = BASE_IPSERVER + 5;
-    // notification from the master SM that it had trouble starting tethering
+    // notification from the {@link Tethering.TetherMainSM} SM that it had trouble starting
+    // tethering
     public static final int CMD_START_TETHERING_ERROR       = BASE_IPSERVER + 6;
-    // notification from the master SM that it had trouble stopping tethering
+    // notification from the {@link Tethering.TetherMainSM} that it had trouble stopping tethering
     public static final int CMD_STOP_TETHERING_ERROR        = BASE_IPSERVER + 7;
-    // notification from the master SM that it had trouble setting the DNS forwarders
+    // notification from the {@link Tethering.TetherMainSM} that it had trouble setting the DNS
+    // forwarders
     public static final int CMD_SET_DNS_FORWARDERS_ERROR    = BASE_IPSERVER + 8;
     // the upstream connection has changed
     public static final int CMD_TETHER_CONNECTION_CHANGED   = BASE_IPSERVER + 9;
@@ -1315,7 +1319,7 @@
 
     /**
      * This state is terminal for the per interface state machine.  At this
-     * point, the master state machine should have removed this interface
+     * point, the tethering main state machine should have removed this interface
      * specific state machine from its list of possible recipients of
      * tethering requests.  The state machine itself will hang around until
      * the garbage collector finds it.
diff --git a/Tethering/src/android/net/util/TetheringMessageBase.java b/Tethering/src/android/net/util/TetheringMessageBase.java
index 1b763ce..29c0a81 100644
--- a/Tethering/src/android/net/util/TetheringMessageBase.java
+++ b/Tethering/src/android/net/util/TetheringMessageBase.java
@@ -19,7 +19,7 @@
  * This class defines Message.what base addresses for various state machine.
  */
 public class TetheringMessageBase {
-    public static final int BASE_MASTER   = 0;
+    public static final int BASE_MAIN_SM   = 0;
     public static final int BASE_IPSERVER = 100;
 
 }