Miscellaneous cleanup to reduce number of includes in platform/graphics/

Source/core/platform/graphics/RoundedRect.cpp

 /*
  * Copyright (C) 2003, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2013 Xidorn Quan (quanxunzhen@gmail.com)
  *
  * 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
@@ skipping 10 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, 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.
  */
 
 #include "config.h"
 #include "core/platform/graphics/RoundedRect.h"
 
+#include "core/platform/graphics/FloatQuad.h"
+
 #include <algorithm>
 
 using namespace std;
 
 namespace WebCore {
 
 bool RoundedRect::Radii::isZero() const
 {
     return m_topLeft.isZero() && m_topRight.isZero() && m_bottomLeft.isZero() && m_bottomRight.isZero();
 }
@@ skipping 188 matching lines @@
             FloatSize size(bottomRight.width(), bottomRight.height());
             if (!quad.intersectsEllipse(center, size))
                 return false;
         }
     }
 
     return true;
 }
 
 } // namespace WebCore