Use implicit conversion to FloatRect to remove overloaded filterSize

Source/platform/graphics/filters/FilterEffect.cpp

 /*
  * Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2012 University of Szeged
  * Copyright (C) 2013 Google Inc. 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 52 matching lines @@
 
 bool FilterEffect::isFilterSizeValid(const FloatRect& rect)
 {
     if (rect.width() < 0 || rect.height() < 0
         ||  (rect.height() * rect.width() > kMaxFilterArea))
         return false;
 
     return true;
 }
 
-
-bool FilterEffect::isFilterSizeValid(const IntRect& rect)
-{
-    return isFilterSizeValid(FloatRect(rect));
-}
-
 FloatRect FilterEffect::determineAbsolutePaintRect(const FloatRect& originalRequestedRect)
 {
     FloatRect requestedRect = originalRequestedRect;
     // Filters in SVG clip to primitive subregion, while CSS doesn't.
     if (m_clipsToBounds)
         requestedRect.intersect(maxEffectRect());
 
     // We may be called multiple times if result is used more than once. Return
     // quickly if if nothing new is required.
     if (absolutePaintRect().contains(enclosingIntRect(requestedRect)))
@@ skipping 486 matching lines @@
     }
     if (hasHeight()) {
         rect.fBottom = rect.fTop + boundaries.height();
         flags |= SkImageFilter::CropRect::kHasBottom_CropEdge;
     }
     rect = filter()->mapLocalRectToAbsoluteRect(rect);
     return SkImageFilter::CropRect(rect, flags);
 }
 
 } // namespace WebCore