Remove support for -webkit-line-clamp

Source/core/rendering/RenderLayer.cpp

Index: Source/core/rendering/RenderLayer.cpp
diff --git a/Source/core/rendering/RenderLayer.cpp b/Source/core/rendering/RenderLayer.cpp
index a18ab22ce0bc044933cbbba4ced6a615213cfcce..a91b7f591abcb4b9d3cb0c4ea59cf165437d9ea4 100644
--- a/Source/core/rendering/RenderLayer.cpp
+++ b/Source/core/rendering/RenderLayer.cpp
@@ -2158,11 +2158,7 @@ void RenderLayer::scrollByRecursively(const IntSize& delta, ScrollOffsetClamping
     if (delta.isZero())
         return;
 
-    bool restrictedByLineClamp = false;
-    if (renderer()->parent())
-        restrictedByLineClamp = !renderer()->parent()->style()->lineClamp().isNone();
-
-    if (renderer()->hasOverflowClip() && !restrictedByLineClamp) {
+    if (renderer()->hasOverflowClip()) {
         IntSize newScrollOffset = adjustedScrollOffset() + delta;
         m_scrollableArea->scrollToOffset(newScrollOffset, clamp);
 
@@ -2214,15 +2210,10 @@ void RenderLayer::scrollRectToVisible(const LayoutRect& rect, const ScrollAlignm
     RenderLayer* parentLayer = 0;
     LayoutRect newRect = rect;
 
-    bool restrictedByLineClamp = false;
-    if (renderer()->parent()) {
+    if (renderer()->parent())
         parentLayer = renderer()->parent()->enclosingLayer();
-        restrictedByLineClamp = !renderer()->parent()->style()->lineClamp().isNone();
-    }
 
-    if (renderer()->hasOverflowClip() && !restrictedByLineClamp) {
-        // Don't scroll to reveal an overflow layer that is restricted by the -webkit-line-clamp property.
-        // This will prevent us from revealing text hidden by the slider in Safari RSS.
+    if (renderer()->hasOverflowClip()) {
         RenderBox* box = renderBox();
         ASSERT(box);
         LayoutRect localExposeRect(box->absoluteToLocalQuad(FloatQuad(FloatRect(rect)), UseTransforms).boundingBox());