[ObjC ARC] Converts ios/chrome/browser/geolocation:test_support to ARC.

Automatically generated ARCMigrate commit
Notable issues:None
BUG=624363
TEST=None

Review-Url: https://codereview.chromium.org/2510133003
Cr-Commit-Position: refs/heads/master@{#436283}

ios/chrome/browser/geolocation/BUILD.gn

@@ -34,6 +34,7 @@ source_set("geolocation") {
 }
 
 source_set("test_support") {
+  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "test_location_manager.h",

ios/chrome/browser/geolocation/test_location_manager.h

@@ -17,7 +17,7 @@
 @property(nonatomic, assign) CLAuthorizationStatus authorizationStatus;
 
 // Writable version of the LocationManager |currentLocation| property.
-@property(nonatomic, retain) CLLocation* currentLocation;
+@property(nonatomic, strong) CLLocation* currentLocation;
 
 // Writable version of the LocationManager |locationServicesEnabled| property.
 @property(nonatomic, assign) BOOL locationServicesEnabled;

ios/chrome/browser/geolocation/test_location_manager.mm

@@ -4,24 +4,20 @@
 
 #import "ios/chrome/browser/geolocation/test_location_manager.h"
 
-#include "base/mac/scoped_nsobject.h"
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
 
-@interface TestLocationManager () {
-  CLAuthorizationStatus _authorizationStatus;
-  base::scoped_nsobject<CLLocation> _currentLocation;
-  BOOL _locationServicesEnabled;
-  BOOL _started;
-  BOOL _stopped;
-}
+@interface TestLocationManager ()
 
 @end
 
 @implementation TestLocationManager
-
 @synthesize authorizationStatus = _authorizationStatus;
 @synthesize locationServicesEnabled = _locationServicesEnabled;
 @synthesize started = _started;
 @synthesize stopped = _stopped;
+@synthesize currentLocation = _currentLocation;
 
 - (id)init {
   self = [super init];
@@ -38,17 +34,9 @@
   }
 }
 
-- (CLLocation*)currentLocation {
-  return _currentLocation;
-}
-
-- (void)setCurrentLocation:(CLLocation*)currentLocation {
-  _currentLocation.reset([currentLocation retain]);
-}
-
 - (void)reset {
   _authorizationStatus = kCLAuthorizationStatusNotDetermined;
-  _currentLocation.reset();
+  _currentLocation = nil;
   _locationServicesEnabled = YES;
   _started = NO;
   _stopped = NO;