System/Library/PrivateFrameworks/PhotoLibrary.framework

PLProgressArcLayer.h

NSObject
>
CALayer

@interface PLProgressArcLayer : CALayer

@property (nonatomic) double radius;
@property (nonatomic) double startAngle;
@property (nonatomic) double endAngle;
@property (nonatomic) double lineWidth;

- (id)init;
- (void)drawInContext:(struct CGContext { } *)a0;

@end