Unreviewed, fix non-unified build

* Source/WebKit/WebProcess/WebCoreSupport/WebColorChooser.h: Add missing
  header 'wtf/CheckedPtr.h'.

Canonical link: https://commits.webkit.org/283146@main

Author: dpino

Source/WebKit/WebProcess/WebCoreSupport/WebColorChooser.h

@@ -28,6 +28,7 @@
 #if ENABLE(INPUT_TYPE_COLOR)
 
 #include <WebCore/ColorChooser.h>
+#include <wtf/CheckedPtr.h>
 #include <wtf/WeakPtr.h>
 
 namespace WebKit {