Move NSScrollerImpDetails to platform/mac/

Source/platform/mac/NSScrollerImpDetails.h

Index: Source/platform/mac/NSScrollerImpDetails.h
diff --git a/Source/core/platform/mac/NSScrollerImpDetails.h b/Source/platform/mac/NSScrollerImpDetails.h
similarity index 93%
rename from Source/core/platform/mac/NSScrollerImpDetails.h
rename to Source/platform/mac/NSScrollerImpDetails.h
index 2ec59f54645eba3be0ba31d4d006c8709a4f8cd0..bcf9855b33f7a5c471f0240b2ca50f044630a3a8 100644
--- a/Source/core/platform/mac/NSScrollerImpDetails.h
+++ b/Source/platform/mac/NSScrollerImpDetails.h
@@ -45,12 +45,12 @@ typedef NSInteger NSScrollerKnobStyle;
 #endif
 
 #if __MAC_OS_X_VERSION_MAX_ALLOWED == 1060
-@interface NSScroller(NSObject)
+PLATFORM_EXPORT @interface NSScroller(NSObject)
 + (NSScrollerStyle)preferredScrollerStyle;
 @end
 #endif
 
-@interface NSObject (ScrollbarPainter)
+PLATFORM_EXPORT @interface NSObject (ScrollbarPainter)
 + (id)scrollerImpWithStyle:(NSScrollerStyle)newScrollerStyle controlSize:(NSControlSize)newControlSize horizontal:(BOOL)horizontal replacingScrollerImp:(id)previous;
 - (CGFloat)knobAlpha;
 - (void)setKnobAlpha:(CGFloat)knobAlpha;
@@ -83,7 +83,7 @@ typedef NSInteger NSScrollerKnobStyle;
 - (void)mouseExitedScroller;
 @end
 
-@interface NSObject (ScrollbarPainterController)
+PLATFORM_EXPORT @interface NSObject (ScrollbarPainterController)
 - (void)setDelegate:(id)delegate;
 - (void)hideOverlayScrollers;
 - (void)flashScrollers;
@@ -110,9 +110,9 @@ typedef NSInteger NSScrollerKnobStyle;
 
 namespace WebCore {
 
-bool isScrollbarOverlayAPIAvailable();
+PLATFORM_EXPORT bool isScrollbarOverlayAPIAvailable();
 
-NSScrollerStyle recommendedScrollerStyle();
+PLATFORM_EXPORT NSScrollerStyle recommendedScrollerStyle();
 
 }