Don't include headers from the layout API from other headers needlessly.

third_party/WebKit/Source/core/layout/LayoutImage.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011-2012. All rights reserved.
  *
@@ skipping 17 matching lines @@
 #include "core/layout/LayoutImage.h"
 
 #include "core/HTMLNames.h"
 #include "core/fetch/ImageResource.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/UseCounter.h"
 #include "core/html/HTMLAreaElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/layout/HitTestResult.h"
+#include "core/layout/LayoutView.h"
 #include "core/paint/ImagePainter.h"
 #include "core/svg/graphics/SVGImage.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 
 LayoutImage::LayoutImage(Element* element)
     : LayoutReplaced(element, LayoutSize())
     , m_didIncrementVisuallyNonEmptyPixelCount(false)
@@ skipping 259 matching lines @@
         return nullptr;
 
     ImageResource* cachedImage = m_imageResource->cachedImage();
     if (cachedImage && cachedImage->getImage() && cachedImage->getImage()->isSVGImage())
         return toSVGImage(cachedImage->getImage())->embeddedReplacedContent();
 
     return nullptr;
 }
 
 } // namespace blink