Refactor: rename LocationHandler to GPSHandler.

src/androidTest/java/de/dennisguse/opentracks/io/file/importer/ExportImportTest.java

@@ -423,6 +423,6 @@ public class ExportImportTest {
         });
 
         trackPointCreator.setClock(Clock.fixed(time, ZoneId.of("CET")));
-        trackPointCreator.getLocationHandler().onLocationChanged(location);
+        trackPointCreator.getGpsHandler().onLocationChanged(location);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/services/handlers/GPSHandlerTest.java

@@ -26,7 +26,7 @@ import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.settings.PreferencesUtils;
 
 @RunWith(MockitoJUnitRunner.class)
-public class LocationHandlerTest {
+public class GPSHandlerTest {
 
     private final Context context = ApplicationProvider.getApplicationContext();
 
@@ -34,7 +34,7 @@ public class LocationHandlerTest {
     private TrackPointCreator trackPointCreator;
 
     @InjectMocks
-    private LocationHandler locationHandler;
+    private GPSHandler locationHandler;
 
     @BeforeClass
     public static void preSetUp() {

src/androidTest/java/de/dennisguse/opentracks/services/handlers/TrackPointCreatorTest.java

@@ -26,7 +26,7 @@ public class TrackPointCreatorTest {
     private TrackPointCreator.Callback server;
 
     @Mock
-    private LocationHandler locationHandler;
+    private GPSHandler locationHandler;
 
     @Mock
     private SharedPreferences sharedPreferences;