mac: Update clients of scoped_nsobject.h.

ui/base/cocoa/menu_controller.mm

Index: ui/base/cocoa/menu_controller.mm
diff --git a/ui/base/cocoa/menu_controller.mm b/ui/base/cocoa/menu_controller.mm
index cacb9b2249f0c77cd079ce8387e141d6ffb46c3f..1179284924b906875dbb7e652e21941cc18d0ba8 100644
--- a/ui/base/cocoa/menu_controller.mm
+++ b/ui/base/cocoa/menu_controller.mm
@@ -107,7 +107,7 @@
     label16 = [MenuController elideMenuTitle:label16 toWidth:maxWidth];
 
   NSString* label = l10n_util::FixUpWindowsStyleLabel(label16);
-  scoped_nsobject<NSMenuItem> item(
+  base::scoped_nsobject<NSMenuItem> item(
       [[NSMenuItem alloc] initWithTitle:label
                                  action:@selector(itemSelected:)
                           keyEquivalent:@""]);
@@ -184,7 +184,7 @@
       NSDictionary *attributes =
           [NSDictionary dictionaryWithObject:font->GetNativeFont()
                                       forKey:NSFontAttributeName];
-      scoped_nsobject<NSAttributedString> title(
+      base::scoped_nsobject<NSAttributedString> title(
           [[NSAttributedString alloc] initWithString:[(id)item title]
                                           attributes:attributes]);
       [(id)item setAttributedTitle:title.get()];
@@ -217,7 +217,7 @@
     // complicate creation logic, and since the tags are model indexes, they
     // are unaffected by the extra item.
     if (useWithPopUpButtonCell_) {
-      scoped_nsobject<NSMenuItem> blankItem(
+      base::scoped_nsobject<NSMenuItem> blankItem(
           [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""]);
       [menu_ insertItem:blankItem atIndex:0];
     }