ref: Use SentrySpan protocol instead of class (#6298)

Author: noahsmartin

Sources/Sentry/SentryTimeToDisplayTracker.m

@@ -25,8 +25,8 @@
 
 @interface SentryTimeToDisplayTracker () <SentryFramesTrackerListener>
 
-@property (nonatomic, weak) SentrySpan *initialDisplaySpan;
-@property (nonatomic, weak) SentrySpan *fullDisplaySpan;
+@property (nonatomic, weak) id<SentrySpan> initialDisplaySpan;
+@property (nonatomic, weak) id<SentrySpan> fullDisplaySpan;
 @property (nonatomic, strong, readonly) SentryDispatchQueueWrapper *dispatchQueueWrapper;
 
 @end
@@ -198,7 +198,7 @@ - (void)framesTrackerHasNewFrame:(NSDate *)newFrameDate
     }
 }
 
-- (void)addTimeToDisplayMeasurement:(SentrySpan *)span name:(NSString *)name
+- (void)addTimeToDisplayMeasurement:(id<SentrySpan>)span name:(NSString *)name
 {
     NSTimeInterval duration = [span.timestamp timeIntervalSinceDate:span.startTimestamp] * 1000;
     [span setMeasurement:name value:@(duration) unit:SentryMeasurementUnitDuration.millisecond];

Sources/Sentry/include/SentryTimeToDisplayTracker.h

@@ -2,11 +2,12 @@
 
 #if SENTRY_HAS_UIKIT
 
-@class SentrySpan;
 @class SentryTracer;
 @class SentryDispatchQueueWrapper;
 @class UIViewController;
 
+@protocol SentrySpan;
+
 NS_ASSUME_NONNULL_BEGIN
 
 /**
@@ -19,9 +20,9 @@ NS_ASSUME_NONNULL_BEGIN
 @interface SentryTimeToDisplayTracker : NSObject
 SENTRY_NO_INIT
 
-@property (nullable, nonatomic, weak, readonly) SentrySpan *initialDisplaySpan;
+@property (nullable, nonatomic, weak, readonly) id<SentrySpan> initialDisplaySpan;
 
-@property (nullable, nonatomic, weak, readonly) SentrySpan *fullDisplaySpan;
+@property (nullable, nonatomic, weak, readonly) id<SentrySpan> fullDisplaySpan;
 
 @property (nonatomic, readonly) BOOL waitForFullDisplay;