Removing a bunch of unused platform code.

Source/WebCore/platform/graphics/LayoutSize.h

Index: Source/WebCore/platform/graphics/LayoutSize.h
diff --git a/Source/WebCore/platform/graphics/LayoutSize.h b/Source/WebCore/platform/graphics/LayoutSize.h
index 79c769a579efa37b54f1763e78d3456b2b669a88..ef256d3b4733c2879c1667da80efc9609ce71605 100644
--- a/Source/WebCore/platform/graphics/LayoutSize.h
+++ b/Source/WebCore/platform/graphics/LayoutSize.h
@@ -35,14 +35,6 @@
 #include "IntSize.h"
 #include "LayoutUnit.h"
 
-#if PLATFORM(QT)
-#include <qglobal.h>
-QT_BEGIN_NAMESPACE
-class QSize;
-class QSizeF;
-QT_END_NAMESPACE
-#endif
-
 namespace WebCore {
 
 class LayoutPoint;
@@ -120,12 +112,6 @@ public:
         return LayoutSize(m_height, m_width);
     }
 
-#if PLATFORM(QT)
-    explicit LayoutSize(const QSize&);
-    explicit LayoutSize(const QSizeF&);
-    operator QSizeF() const;
-#endif
-
 private:
     LayoutUnit m_width, m_height;
 };