Add circular stop and gap to Determinant Progress View.

PiperOrigin-RevId: 607765268

components/ProgressView/src/MDCProgressView.h

@@ -151,6 +151,24 @@ IB_DESIGNABLE
 @property(nonatomic, copy, nullable) void (^traitCollectionDidChangeBlock)
     (MDCProgressView *_Nonnull progressView, UITraitCollection *_Nullable previousTraitCollection);
 
+/**
+ The property that gates the NTC Determinate progress view changes. This enables the stop mark,
+ rounded corners, and gap.
+
+ For accessibility, this should be enabled for most determinate progress indicators. However, it may
+ be disabled when the determinate track extends the full width of the screen.
+
+ The default value is NO.
+ */
+@property(nonatomic, assign) BOOL enableDeterminateStopMark;
+
+/**
+ The color shown for the gap(s) between the progress bar(s) and the track.
+
+ The default is clearColor, which results in an appearance with no visible gaps.
+ */
+@property(nonatomic, strong, nullable) UIColor *gapColor UI_APPEARANCE_SELECTOR;
+
 @end
 
 NS_ASSUME_NONNULL_END