Move PlatformScreen, PlatformScreenChromium, and Widget to Source/platform

Source/platform/Widget.h

 /*
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2008 Collabora Ltd.  All rights reserved.
  * Copyright (C) 2013 Google Inc.  All rights reserved.
  *
  * 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.
@@ skipping 10 matching lines @@
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Widget_h
 #define Widget_h
 
+#include "platform/PlatformExport.h"
 #include "platform/geometry/IntRect.h"
 #include "wtf/Forward.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class Cursor;
 class Event;
 class GraphicsContext;
 class HostWindow;
 
 // The Widget class serves as a base class for three kinds of objects:
 // (1) Scrollable areas (ScrollView)
 // (2) Scrollbars (Scrollbar)
 // (3) Plugins (PluginView)
 //
 // Widgets are connected in a hierarchy, with the restriction that plugins and
 // scrollbars are always leaves of the tree. Only ScrollViews can have children
 // (and therefore the Widget class has no concept of children).
-class Widget : public RefCounted<Widget> {
+class PLATFORM_EXPORT Widget : public RefCounted<Widget> {

[eseidel, 2013/10/11 18:28:55]

I'm not sure this buys us much to move this to platform.  But it's OK.  We
certainly don't want this long-term part of platform/

 public:
     Widget();
     virtual ~Widget();
 
     int x() const { return frameRect().x(); }
     int y() const { return frameRect().y(); }
     int width() const { return frameRect().width(); }
     int height() const { return frameRect().height(); }
     IntSize size() const { return frameRect().size(); }
     IntPoint location() const { return frameRect().location(); }
@@ skipping 35 matching lines @@
     Widget* root() const;
 
     virtual void handleEvent(Event*) { }
 
     IntRect convertToRootView(const IntRect&) const;
     IntRect convertFromRootView(const IntRect&) const;
 
     IntPoint convertToRootView(const IntPoint&) const;
     IntPoint convertFromRootView(const IntPoint&) const;
 
-    // It is important for cross-platform code to realize that Mac has flipped coordinates.  Therefore any code
+    // It is important for cross-platform code to realize that Mac has flipped coordinates. Therefore any code
     // that tries to convert the location of a rect using the point-based convertFromContainingWindow will end
-    // up with an inaccurate rect.  Always make sure to use the rect-based convertFromContainingWindow method
+    // up with an inaccurate rect. Always make sure to use the rect-based convertFromContainingWindow method
     // when converting window rects.
     IntRect convertToContainingWindow(const IntRect&) const;
     IntRect convertFromContainingWindow(const IntRect&) const;
 
     IntPoint convertToContainingWindow(const IntPoint&) const;
     IntPoint convertFromContainingWindow(const IntPoint&) const;
 
     virtual void frameRectsChanged() { }
 
     // Notifies this widget that other widgets on the page have been repositioned.
-    virtual void widgetPositionsUpdated() {}
+    virtual void widgetPositionsUpdated() { }
 
     // Notifies this widget that its clip rect changed.
     virtual void clipRectChanged() { }
 
     // Virtual methods to convert points to/from the containing ScrollView
     virtual IntRect convertToContainingView(const IntRect&) const;
     virtual IntRect convertFromContainingView(const IntRect&) const;
     virtual IntPoint convertToContainingView(const IntPoint&) const;
     virtual IntPoint convertFromContainingView(const IntPoint&) const;
 
     // Virtual methods to convert points to/from child widgets
     virtual IntPoint convertChildToSelf(const Widget*, const IntPoint&) const;
     virtual IntPoint convertSelfToChild(const Widget*, const IntPoint&) const;
 
     // Notifies this widget that it will no longer be receiving events.
     virtual void eventListenersRemoved() { }
 
 private:
     Widget* m_parent;
     IntRect m_frame;
     bool m_selfVisible;
     bool m_parentVisible;
 };
 
 } // namespace WebCore
 
 #endif // Widget_h