Revert of [ObjC ARC] Converts ios/chrome/browser/ui:ui to ARC.

ios/chrome/browser/ui/reversed_animation.mm

Index: ios/chrome/browser/ui/reversed_animation.mm
diff --git a/ios/chrome/browser/ui/reversed_animation.mm b/ios/chrome/browser/ui/reversed_animation.mm
index 557c7d8d951ad691d808ad7efc027fcfbc238c2b..58ce55b77ea93c49c14a7dbd0e30d1f1e73e61b9 100644
--- a/ios/chrome/browser/ui/reversed_animation.mm
+++ b/ios/chrome/browser/ui/reversed_animation.mm
@@ -9,10 +9,7 @@
 #include <cmath>
 
 #include "base/logging.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
+#include "base/mac/objc_property_releaser.h"
 
 @protocol ReversedAnimationProtocol;
 typedef CAAnimation<ReversedAnimationProtocol> ReversedAnimation;
@@ -63,7 +60,10 @@
 
 #pragma mark - ReversedBasicAnimation
 
-@interface ReversedBasicAnimation : CABasicAnimation<ReversedAnimationProtocol>
+@interface ReversedBasicAnimation
+    : CABasicAnimation<ReversedAnimationProtocol> {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_ReversedBasicAnimation;
+}
 
 // Returns an animation that performs |animation| in reverse when added to
 // |layer|.  |parentBeginTime| should be set to the beginTime in absolute time
@@ -80,6 +80,15 @@
 @synthesize originalAnimation = _originalAnimation;
 @synthesize animationDirection = _animationDirection;
 @synthesize animationTimeOffset = _animationTimeOffset;
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _propertyReleaser_ReversedBasicAnimation.Init(
+        self, [ReversedBasicAnimation class]);
+  }
+  return self;
+}
 
 - (instancetype)copyWithZone:(NSZone*)zone {
   ReversedBasicAnimation* copy = [super copyWithZone:zone];
@@ -127,7 +136,10 @@
 
 #pragma mark - ReversedAnimationGroup
 
-@interface ReversedAnimationGroup : CAAnimationGroup<ReversedAnimationProtocol>
+@interface ReversedAnimationGroup
+    : CAAnimationGroup<ReversedAnimationProtocol> {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_ReversedAnimationGroup;
+}
 
 // Returns an animation that performs |animation| in reverse when added to
 // |layer|.  |parentBeginTime| should be set to the beginTime in absolute time
@@ -144,6 +156,15 @@
 @synthesize originalAnimation = _originalAnimation;
 @synthesize animationDirection = _animationDirection;
 @synthesize animationTimeOffset = _animationTimeOffset;
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _propertyReleaser_ReversedAnimationGroup.Init(
+        self, [ReversedAnimationGroup class]);
+  }
+  return self;
+}
 
 - (instancetype)copyWithZone:(NSZone*)zone {
   ReversedAnimationGroup* copy = [super copyWithZone:zone];