Remove custom style building functions for 'clip'.

Source/core/rendering/style/RenderStyle.cpp

Index: Source/core/rendering/style/RenderStyle.cpp
diff --git a/Source/core/rendering/style/RenderStyle.cpp b/Source/core/rendering/style/RenderStyle.cpp
index 13276d2570dae70b2c50e5f8444183c34c3aad34..d94acc29976adf9ad797af60790b5a3b77d1cd66 100644
--- a/Source/core/rendering/style/RenderStyle.cpp
+++ b/Source/core/rendering/style/RenderStyle.cpp
@@ -622,7 +622,7 @@ bool RenderStyle::diffNeedsFullLayout(const RenderStyle& other) const
 
 bool RenderStyle::diffNeedsPaintInvalidationLayer(const RenderStyle& other) const
 {
-    if (position() != StaticPosition && (visual->clip != other.visual->clip || visual->hasClip != other.visual->hasClip))
+    if (position() != StaticPosition && (visual->clip != other.visual->clip || visual->hasAutoClip != other.visual->hasAutoClip))
         return true;
 
     if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
@@ -705,15 +705,6 @@ void RenderStyle::updatePropertySpecificDifferences(const RenderStyle& other, St
     }
 }
 
-void RenderStyle::setClip(const Length& top, const Length& right, const Length& bottom, const Length& left)
-{
-    StyleVisualData* data = visual.access();
-    data->clip.m_top = top;
-    data->clip.m_right = right;
-    data->clip.m_bottom = bottom;
-    data->clip.m_left = left;
-}
-
 void RenderStyle::addCursor(PassRefPtr<StyleImage> image, const IntPoint& hotSpot)
 {
     if (!rareInheritedData.access()->cursorData)