MacViews: Clip contents for non-rectangular windows.

ui/gfx/path_mac.h

Index: ui/gfx/path_mac.h
diff --git a/ui/gfx/path_mac.h b/ui/gfx/path_mac.h
index f20fa62d7c2bca08899053f28a311b04d77dfb6d..175f61f0be03f6080b30cff67ab1379458fd1381 100644
--- a/ui/gfx/path_mac.h
+++ b/ui/gfx/path_mac.h
@@ -5,9 +5,11 @@
 #ifndef UI_GFX_PATH_MAC_H_
 #define UI_GFX_PATH_MAC_H_
 
+#import <Cocoa/Cocoa.h>
+
+#include "base/mac/scoped_cftyperef.h"
 #include "ui/gfx/gfx_export.h"
 
-@class NSBezierPath;
 class SkPath;
 
 namespace gfx {
@@ -16,6 +18,11 @@ namespace gfx {
 // call retain on the returned object, if it wishes to take ownership.
 GFX_EXPORT NSBezierPath* CreateNSBezierPathFromSkPath(const SkPath& path);
 
+// Returns an immutable CGPath corresponding to |path|. An empty CGPath is
+// returned for an empty or nil |path| value.
+GFX_EXPORT base::ScopedCFTypeRef<CGPathRef> CreateCGPathFromNSBezierPath(
+    NSBezierPath* path);
+
 }  // namespace gfx
 
 #endif  // UI_GFX_PATH_MAC_H_