Work on issue #18118255: StateMachine aggressively keeping its own logs...

...(512KB RAM, 10K objects)

Pull this back to 300 entries on Svelte devices...  we also need to reduce
this on non-Svelte devices, but at least right now we desperately need it
fixed on Svelte.

Change-Id: I301bf8a4637c066166a5a69c178d581c072b8dc5

service/java/com/android/server/wifi/WifiStateMachine.java

@@ -31,6 +31,7 @@ import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING;
  */
 import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN;
 
+import android.app.ActivityManager;
 import android.app.AlarmManager;
 import android.app.PendingIntent;
 import android.app.backup.IBackupManager;
@@ -1044,7 +1045,7 @@ public class WifiStateMachine extends StateMachine {
 
         setInitialState(mInitialState);
 
-        setLogRecSize(3000);
+        setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000);
         setLogOnlyTransitions(false);
         if (VDBG) setDbg(true);