Fix a leak in a MacViews pasteboard test.

ui/views/cocoa/drag_drop_client_mac_unittest.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ui/views/cocoa/drag_drop_client_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_objc_class_swizzler.h"
 #include "base/mac/sdk_forward_declarations.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "ui/base/clipboard/clipboard_util_mac.h"

[tapted, 2016/11/29 23:00:37]

nit: import?

[erikchen, 2016/11/29 23:08:38]

Done.

 #import "ui/views/cocoa/bridged_native_widget.h"
 #include "ui/views/test/widget_test.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/native_widget_mac.h"
 #include "ui/views/widget/widget.h"
 
 using base::ASCIIToUTF16;
 
 @interface NSView (DragSessionTestingDonor)
 @end
@@ skipping 249 matching lines @@
   // operation.
   EXPECT_EQ(DragUpdate(nil), NSDragOperationNone);
   EXPECT_EQ(Drop(), NSDragOperationNone);
 }
 
 // Tests if the drag and drop target can accept data without an OSExchangeData
 // object.
 TEST_F(DragDropClientMacTest, PasteboardToOSExchangeTest) {
   target_->set_formats(ui::OSExchangeData::STRING);
 
-  NSPasteboard* pasteboard = [NSPasteboard pasteboardWithUniqueName];
+  scoped_refptr<ui::UniquePasteboard> pasteboard = new ui::UniquePasteboard;
 
   // The test should reject the data if the pasteboard is empty.
-  EXPECT_EQ(DragUpdate(pasteboard), NSDragOperationNone);
+  EXPECT_EQ(DragUpdate(pasteboard->get()), NSDragOperationNone);
   EXPECT_EQ(Drop(), NSDragOperationNone);
   drag_drop_client()->EndDrag();
 
   // Add valid data to the pasteboard and check to see if the target accepts
   // it.
-  [pasteboard setString:@"text" forType:NSPasteboardTypeString];
-  EXPECT_EQ(DragUpdate(pasteboard), NSDragOperationCopy);
+  [pasteboard->get() setString:@"text" forType:NSPasteboardTypeString];
+  EXPECT_EQ(DragUpdate(pasteboard->get()), NSDragOperationCopy);
   EXPECT_EQ(Drop(), NSDragOperationMove);
 }
 
 }  // namespace test
 }  // namespace views