Separate ScrollbarThemeMac into separate files

Source/core/platform/mac/ScrollbarThemeMacOverlayAPI.h

Index: Source/core/platform/mac/ScrollbarThemeMacOverlayAPI.h
diff --git a/Source/core/platform/chromium/ScrollbarThemeChromiumDefault.h b/Source/core/platform/mac/ScrollbarThemeMacOverlayAPI.h
similarity index 55%
copy from Source/core/platform/chromium/ScrollbarThemeChromiumDefault.h
copy to Source/core/platform/mac/ScrollbarThemeMacOverlayAPI.h
index 133dab06edc62645b45cd9f3f9197a7e3ddac737..890c3cec806b635a7adb2d91585762cfef18e297 100644
--- a/Source/core/platform/chromium/ScrollbarThemeChromiumDefault.h
+++ b/Source/core/platform/mac/ScrollbarThemeMacOverlayAPI.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, Google Inc. All rights reserved.
+ * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -28,26 +28,43 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef ScrollbarThemeChromiumDefault_h
-#define ScrollbarThemeChromiumDefault_h
+#ifndef ScrollbarThemeMacOverlayAPI_h
+#define ScrollbarThemeMacOverlayAPI_h
 
-#include "core/platform/chromium/ScrollbarThemeChromium.h"
+#include "core/platform/mac/ScrollbarThemeMac.h"
+
+typedef id ScrollbarPainter;
 
 namespace WebCore {
 
-class ScrollbarThemeChromiumDefault : public ScrollbarThemeChromium {
+class ScrollbarThemeMacOverlayAPI : public ScrollbarThemeMacCommon {
 public:
-    virtual int scrollbarThickness(ScrollbarControlSize);
+    virtual void updateEnabledState(ScrollbarThemeClient*);
+    virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar);
+    virtual bool usesOverlayScrollbars() const;
+    virtual void updateScrollbarOverlayStyle(ScrollbarThemeClient*);
+    virtual ScrollbarButtonsPlacement buttonsPlacement() const;
 
-protected:
-    virtual void paintTrackPiece(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart);
-    virtual void paintButton(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart);
+    virtual void registerScrollbar(ScrollbarThemeClient*);
+    virtual void unregisterScrollbar(ScrollbarThemeClient*);
+
+    void setNewPainterForScrollbar(ScrollbarThemeClient*, ScrollbarPainter);
+    ScrollbarPainter painterForScrollbar(ScrollbarThemeClient*);
+
+    virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&);
     virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&);
-    virtual bool shouldCenterOnThumb(ScrollbarThemeClient*, const PlatformMouseEvent&);
-    virtual IntSize buttonSize(ScrollbarThemeClient*);
+
+protected:
+    virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false);
+    virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false);
+    virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false);
+
+    virtual bool hasButtons(ScrollbarThemeClient*) { return false; }
+    virtual bool hasThumb(ScrollbarThemeClient*);
+
     virtual int minimumThumbLength(ScrollbarThemeClient*);
 };
 
-} // namespace WebCore
+}
 
 #endif