Drag-and-drop: Target drag messages (the sequel).

content/browser/web_contents/web_drag_source_mac_unittest.mm

 // Copyright (c) 2012 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 "content/browser/web_contents/web_drag_source_mac.h"
 
 #include "base/memory/ref_counted.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/common/drop_data.h"
 #include "content/public/test/test_renderer_host.h"
@@ skipping 12 matching lines @@
 
   std::unique_ptr<DropData> dropData(new DropData);
   dropData->url = GURL("javascript:%");
 
   WebContentsImpl* contentsImpl = static_cast<WebContentsImpl*>(contents.get());
   scoped_refptr<ui::UniquePasteboard> pasteboard1 = new ui::UniquePasteboard;
   base::scoped_nsobject<WebDragSource> source([[WebDragSource alloc]
        initWithContents:contentsImpl
                    view:view
                dropData:dropData.get()
+              sourceRWH:contentsImpl->GetRenderViewHost()->GetWidget()
                   image:nil
                  offset:NSZeroPoint
              pasteboard:pasteboard1->get()
       dragOperationMask:NSDragOperationCopy]);
 
   // Test that this call doesn't throw any exceptions: http://crbug.com/128371
   scoped_refptr<ui::UniquePasteboard> pasteboard2 = new ui::UniquePasteboard;
   [source lazyWriteToPasteboard:pasteboard2->get() forType:NSURLPboardType];
 }
 
 }  // namespace content