Remove OwnPtr::release() calls in core/ (part 4).

third_party/WebKit/Source/core/page/DragController.cpp

 /*
  * Copyright (C) 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 813 matching lines @@
         float scale = newSize.width() / (float)originalSize.width();
         float dx = origin.x() - dragOrigin.x();
         dx *= scale;
         origin.setX((int)(dx + 0.5));
         float dy = origin.y() - dragOrigin.y();
         dy *= scale;
         origin.setY((int)(dy + 0.5));
     }
 
     dragLocation = dragOrigin + origin;
-    return dragImage.release();
+    return dragImage;
 }
 
 static PassOwnPtr<DragImage> dragImageForLink(const KURL& linkURL, const String& linkText, float deviceScaleFactor, const IntPoint& mouseDraggedPoint, IntPoint& dragLoc)
 {
     FontDescription fontDescription;
     LayoutTheme::theme().systemFont(blink::CSSValueNone, fontDescription);
     OwnPtr<DragImage> dragImage = DragImage::create(linkURL, linkText, fontDescription, deviceScaleFactor);
 
     IntSize size = dragImage ? dragImage->size() : IntSize();
     IntPoint dragImageOffset(-size.width() / 2, -LinkDragBorderInset);
     dragLoc = IntPoint(mouseDraggedPoint.x() + dragImageOffset.x(), mouseDraggedPoint.y() + dragImageOffset.y());
 
-    return dragImage.release();
+    return dragImage;
 }
 
 bool DragController::startDrag(LocalFrame* src, const DragState& state, const PlatformMouseEvent& dragEvent, const IntPoint& dragOrigin)
 {
     ASSERT(dragTypeIsValid(state.m_dragType));
     ASSERT(src);
     if (!src->view() || src->contentLayoutItem().isNull())
         return false;
 
     HitTestResult hitTestResult = src->eventHandler().hitTestResultAtPoint(dragOrigin);
@@ skipping 134 matching lines @@
 
 DEFINE_TRACE(DragController)
 {
     visitor->trace(m_page);
     visitor->trace(m_documentUnderMouse);
     visitor->trace(m_dragInitiator);
     visitor->trace(m_fileInputElementUnderMouse);
 }
 
 } // namespace blink