[ObjC ARC] Converts ios/chrome/browser/geolocation:geolocation to ARC.Automatically generated ARC…

ios/chrome/browser/geolocation/location_manager.mm

Index: ios/chrome/browser/geolocation/location_manager.mm
diff --git a/ios/chrome/browser/geolocation/location_manager.mm b/ios/chrome/browser/geolocation/location_manager.mm
index cab3ea7f1d571affde0f366e4605a8143cc64663..a16d8f23f834a881f3b7d8a2d0d99c008c4b53a7 100644
--- a/ios/chrome/browser/geolocation/location_manager.mm
+++ b/ios/chrome/browser/geolocation/location_manager.mm
@@ -11,6 +11,10 @@
 #import "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #import "ios/public/provider/chrome/browser/geolocation_updater_provider.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 const CLLocationDistance kLocationDesiredAccuracy =
@@ -76,7 +80,6 @@ const NSTimeInterval kLocationUpdateInterval = 365.0 * 24.0 * 60.0 * 60.0;
 
 - (void)dealloc {
   [[NSNotificationCenter defaultCenter] removeObserver:self];
-  [super dealloc];
 }
 
 - (CLAuthorizationStatus)authorizationStatus {
@@ -85,7 +88,7 @@ const NSTimeInterval kLocationUpdateInterval = 365.0 * 24.0 * 60.0 * 60.0;
 
 - (CLLocation*)currentLocation {
   if (!_currentLocation)
-    _currentLocation.reset([[_locationUpdater currentLocation] retain]);
+    _currentLocation.reset([_locationUpdater currentLocation]);
   return _currentLocation;
 }
 
@@ -124,7 +127,7 @@ const NSTimeInterval kLocationUpdateInterval = 365.0 * 24.0 * 60.0 * 60.0;
                                  ->GetUpdateNewLocationKey();
   CLLocation* location = [[notification userInfo] objectForKey:newLocationKey];
   if (location) {
-    _currentLocation.reset([location retain]);
+    _currentLocation.reset(location);
 
     if (_startTime) {
       NSTimeInterval interval = -[_startTime timeIntervalSinceNow];
@@ -144,7 +147,7 @@ const NSTimeInterval kLocationUpdateInterval = 365.0 * 24.0 * 60.0 * 60.0;
 #pragma mark - LocationManager+Testing
 
 - (void)setGeolocationUpdater:(id<GeolocationUpdater>)geolocationUpdater {
-  _locationUpdater.reset([geolocationUpdater retain]);
+  _locationUpdater.reset(geolocationUpdater);
 }
 
 @end