Blink: Replace all "plug-in" with "plugin".

Source/core/layout/LayoutPart.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 202 matching lines @@
 }
 
 void LayoutPart::paintContents(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     PartPainter(*this).paintContents(paintInfo, paintOffset);
 }
 
 CursorDirective LayoutPart::getCursor(const LayoutPoint& point, Cursor& cursor) const
 {
     if (widget() && widget()->isPluginView()) {
-        // A plug-in is responsible for setting the cursor when the pointer is over it.
+        // A plugin is responsible for setting the cursor when the pointer is over it.
         return DoNotSetCursor;
     }
     return LayoutReplaced::getCursor(point, cursor);
 }
 
 void LayoutPart::updateOnWidgetChange()
 {
     Widget* widget = this->widget();
     if (!widget)
         return;
@@ skipping 75 matching lines @@
     if (widget->frameRect() == newFrame)
         return false;
 
     RefPtrWillBeRawPtr<LayoutPart> protector(this);
     RefPtrWillBeRawPtr<Node> protectedNode(node());
     widget->setFrameRect(newFrame);
     return widget->frameRect().size() != newFrame.size();
 }
 
 }