Migrate WTF::HashSet::remove() to ::erase() [part 1]

third_party/WebKit/Source/platform/scroll/ScrollbarThemeMac.mm

 /*
  * Copyright (C) 2008, 2011 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 207 matching lines @@
       [[BlinkScrollbarObserver alloc] initWithScrollbar:&scrollbar
                                                 painter:scrollbarPainter]);
 
   scrollbarPainterMap().insert(&scrollbar, observer);
   updateEnabledState(scrollbar);
   updateScrollbarOverlayColorTheme(scrollbar);
 }
 
 void ScrollbarThemeMac::unregisterScrollbar(ScrollbarThemeClient& scrollbar) {
   scrollbarPainterMap().remove(&scrollbar);
-  scrollbarSet().remove(&scrollbar);
+  scrollbarSet().erase(&scrollbar);
 }
 
 void ScrollbarThemeMac::setNewPainterForScrollbar(
     ScrollbarThemeClient& scrollbar,
     ScrollbarPainter newPainter) {
   RetainPtr<ScrollbarPainter> scrollbarPainter(AdoptNS, [newPainter retain]);
   RetainPtr<BlinkScrollbarObserver> observer(
       AdoptNS,
       [[BlinkScrollbarObserver alloc] initWithScrollbar:&scrollbar
                                                 painter:scrollbarPainter]);
@@ skipping 170 matching lines @@
 }
 
 // static
 NSScrollerStyle ScrollbarThemeMac::recommendedScrollerStyle() {
   if (RuntimeEnabledFeatures::overlayScrollbarsEnabled())
     return NSScrollerStyleOverlay;
   return gPreferredScrollerStyle;
 }
 
 }  // namespace blink