mac: Update clients of scoped_nsobject.h.

ui/base/cocoa/tracking_area_unittest.mm

Index: ui/base/cocoa/tracking_area_unittest.mm
diff --git a/ui/base/cocoa/tracking_area_unittest.mm b/ui/base/cocoa/tracking_area_unittest.mm
index 487aa89f59ed3c856cb1cf3ce72ee649b85e0a44..b12c9d49b7e856c5a0ff19f7d04a509cf2b3fe43 100644
--- a/ui/base/cocoa/tracking_area_unittest.mm
+++ b/ui/base/cocoa/tracking_area_unittest.mm
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/memory/scoped_nsobject.h"
+#include "base/mac/scoped_nsobject.h"
 #import "ui/base/cocoa/tracking_area.h"
 #import "ui/base/test/ui_cocoa_test_helper.h"
 
@@ -35,8 +35,8 @@ class CrTrackingAreaTest : public CocoaTest {
                 userInfo:nil]) {
   }
 
-  scoped_nsobject<TestTrackingAreaOwner> owner_;
-  scoped_nsobject<CrTrackingArea> trackingArea_;
+  base::scoped_nsobject<TestTrackingAreaOwner> owner_;
+  base::scoped_nsobject<CrTrackingArea> trackingArea_;
 };
 
 TEST_F(CrTrackingAreaTest, OwnerForwards) {