Replace ObjCPropertyReleaser with ReleaseProperties() project-wide.

ios/chrome/browser/ui/ntp/new_tab_page_controller.mm

Index: ios/chrome/browser/ui/ntp/new_tab_page_controller.mm
diff --git a/ios/chrome/browser/ui/ntp/new_tab_page_controller.mm b/ios/chrome/browser/ui/ntp/new_tab_page_controller.mm
index ec65f615c8b837fb8ab11f21d5b4546ceeee4546..e9876364eadac29599bc24b26cc05394217155bd 100644
--- a/ios/chrome/browser/ui/ntp/new_tab_page_controller.mm
+++ b/ios/chrome/browser/ui/ntp/new_tab_page_controller.mm
@@ -8,7 +8,7 @@
 
 #import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
-#include "base/mac/objc_property_releaser.h"
+#include "base/mac/objc_release_properties.h"
 #include "base/metrics/user_metrics.h"
 #include "base/metrics/user_metrics_action.h"
 #include "components/prefs/pref_service.h"
@@ -108,11 +108,8 @@ enum {
 @interface NewTabPageController () {
   ios::ChromeBrowserState* browserState_;                   // Weak.
   id<UrlLoader> loader_;                                    // Weak.
-  id<CRWSwipeRecognizerProvider> swipeRecognizerProvider_;  // Weak.
   id<NewTabPageControllerObserver> newTabPageObserver_;     // Weak.
 
-  NewTabPageView* newTabPageView_;
-
   base::scoped_nsobject<RecentTabsPanelController> openTabsController_;
   // Has the scrollView been initialized.
   BOOL scrollInitialized_;
@@ -127,8 +124,6 @@ enum {
   base::WeakNSProtocol<id<WebToolbarDelegate>> webToolbarDelegate_;
 
   base::scoped_nsobject<TabModel> tabModel_;
-
-  base::mac::ObjCPropertyReleaser propertyReleaser_NewTabPageController_;
 }
 
 // Load and bring panel into view.
@@ -176,8 +171,6 @@ enum {
   self = [super initWithNibName:nil url:url];
   if (self) {
     DCHECK(browserState);
-    propertyReleaser_NewTabPageController_.Init(self,
-                                                [NewTabPageController class]);
     browserState_ = browserState;
     loader_ = loader;
     newTabPageObserver_ = ntpObserver;
@@ -282,6 +275,7 @@ enum {
   [bookmarkController_ setDelegate:nil];
   [openTabsController_ setDelegate:nil];
   [[NSNotificationCenter defaultCenter] removeObserver:self];
+  base::mac::ReleaseProperties(self);
   [super dealloc];
 }