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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Support TouchBar in WebKit"
   href="https://bugs.webkit.org/show_bug.cgi?id=164437#c9">Comment # 9</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Support TouchBar in WebKit"
   href="https://bugs.webkit.org/show_bug.cgi?id=164437">bug 164437</a>
              from <span class="vcard"><a class="email" href="mailto:bdakin&#64;apple.com" title="Beth Dakin &lt;bdakin&#64;apple.com&gt;"> <span class="fn">Beth Dakin</span></a>
</span></b>
        <pre>iOS errors are pasted below. Why do we always get these nullability errors on lines of code that were not modified? All of the code I added to this header is even compiled out on iOS except for the gullibility specifiers that I added to get Mac to build.

/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:71:47: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
&#64;property (nonatomic, readonly) AVPlayerLayer *playerLayer;
                                              ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:72:67: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
&#64;property (nonatomic, readonly) AVPictureInPicturePlayerLayerView *pictureInPicturePlayerLayerView;
                                                                  ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:86:54: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
- (BOOL)playerViewController:(AVPlayerViewController *)playerViewController shouldExitFullScreenWithReason:(AVPlayerViewControllerExitFullScreenReason)reason;
                                                     ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:90:4: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
- (instancetype)initWithPlayerLayerView:(__AVPlayerLayerView *)playerLayerView;
   ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:90:62: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
- (instancetype)initWithPlayerLayerView:(__AVPlayerLayerView *)playerLayerView;
                                                             ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:91:98: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
- (void)enterFullScreenAnimated:(BOOL)animated completionHandler:(void (^)(BOOL success, NSError *))completionHandler;
                                                                                                 ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:91:73: error: block pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
- (void)enterFullScreenAnimated:(BOOL)animated completionHandler:(void (^)(BOOL success, NSError *))completionHandler;
                                                                        ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:92:97: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
- (void)exitFullScreenAnimated:(BOOL)animated completionHandler:(void (^)(BOOL success, NSError *))completionHandler;
                                                                                                ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:92:72: error: block pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
- (void)exitFullScreenAnimated:(BOOL)animated completionHandler:(void (^)(BOOL success, NSError *))completionHandler;
                                                                       ^
/Volumes/Data/EWS/WebKit/Source/WebCore/platform/spi/cocoa/AVKitSPI.h:98:50: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
&#64;property (nonatomic, strong) AVPlayerController *playerController;
                                                 ^
10 errors generated.</pre>
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