Replace ObjCPropertyReleaser with ReleaseProperties() project-wide.

ios/chrome/browser/ui/ntp/new_tab_page_bar.h

Index: ios/chrome/browser/ui/ntp/new_tab_page_bar.h
diff --git a/ios/chrome/browser/ui/ntp/new_tab_page_bar.h b/ios/chrome/browser/ui/ntp/new_tab_page_bar.h
index 4258681a09561e09672091287432515cf2adf851..1be9eb673fc3344b226771f0b1295e85bd202bc2 100644
--- a/ios/chrome/browser/ui/ntp/new_tab_page_bar.h
+++ b/ios/chrome/browser/ui/ntp/new_tab_page_bar.h
@@ -23,10 +23,12 @@
 // create a "speech bubble" effect.
 @interface NewTabPageBar : UIView<UIGestureRecognizerDelegate>
 
-@property(nonatomic, retain) NSArray* items;
+@property(nonatomic, retain) NSArray* items;  // NewTabPageBarItem
+// Which button is currently selected.
 @property(nonatomic, assign) NSUInteger selectedIndex;
 @property(nonatomic, assign) CGFloat overlayPercentage;
-@property(nonatomic, readonly, retain) NSArray* buttons;
+// Tabbar buttons.
+@property(nonatomic, readonly, retain) NSArray* buttons;  // UIButton

[Sidney San Martín, 2017/01/05 03:24:05]

I moved these comments from the ivar declarations in the next file, but I'd be
just as happy to remove them.

 @property(nonatomic, assign) id<NewTabPageBarDelegate> delegate;
 
 // Changes the colors of the buttons and overlay depending on the content offset