Revert of Check if drawFocusRingMaskWithFrame:inView: exists when drawing focus ring

Source/platform/mac/WebCoreNSCellExtras.mm

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
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  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
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  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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 #import "platform/mac/WebCoreNSCellExtras.h"
 
+#if !BUTTON_CELL_DRAW_WITH_FRAME_DRAWS_FOCUS_RING
+
 @implementation NSCell (WebCoreFocusRingDrawing)
 
-- (void)cr_drawFocusRingWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
+- (void)_web_drawFocusRingWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
 {
-    // FIXME: Remove this check when we drop support for Mac OS X 10.6
-    if (![self respondsToSelector:@selector(drawFocusRingMaskWithFrame:inView:)])
-        return;
     CGContextRef cgContext = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
     CGContextSaveGState(cgContext);
     NSSetFocusRingStyle(NSFocusRingOnly);
     CGContextBeginTransparencyLayerWithRect(cgContext, NSRectToCGRect(cellFrame), 0);
     [self drawFocusRingMaskWithFrame:cellFrame inView:controlView];
     CGContextEndTransparencyLayer(cgContext);
     CGContextRestoreGState(cgContext);
 }
 
 @end
+
+#endif // !BUTTON_CELL_DRAW_WITH_FRAME_DRAWS_FOCUS_RING