MacViews: Implement SetCursor

ui/views/cocoa/views_nswindow_delegate.h

Index: ui/views/cocoa/views_nswindow_delegate.h
diff --git a/ui/views/cocoa/views_nswindow_delegate.h b/ui/views/cocoa/views_nswindow_delegate.h
index 70fe74d8e6ba1697e5c77dcdb68bd34b3ed15d75..d5ef872ee078e3c41aeb77a627391a2ac44d84c8 100644
--- a/ui/views/cocoa/views_nswindow_delegate.h
+++ b/ui/views/cocoa/views_nswindow_delegate.h
@@ -7,6 +7,8 @@
 
 #import <Cocoa/Cocoa.h>
 
+#import "base/mac/scoped_nsobject.h"
+
 namespace views {
 class NativeWidgetMac;
 class BridgedNativeWidget;
@@ -17,12 +19,17 @@ class BridgedNativeWidget;
 @interface ViewsNSWindowDelegate : NSObject<NSWindowDelegate> {
  @private
   views::BridgedNativeWidget* parent_;  // Weak. Owns this.
+  base::scoped_nsobject<NSCursor> cursor_;
 }
 
 // The NativeWidgetMac that created the window this is attached to. Returns
 // NULL if not created by NativeWidgetMac.
 @property(nonatomic, readonly) views::NativeWidgetMac* nativeWidgetMac;
 
+// If set, the cursor set in -[NSResponder updateCursor:] when the window is
+// reached along the responder chain.
+@property(retain, nonatomic) NSCursor* cursor;
+
 // Initialize with the given |parent|.
 - (id)initWithBridgedNativeWidget:(views::BridgedNativeWidget*)parent;