Implement CSS3TextDecorations runtime flag in favor of CSS3_TEXT

Source/core/rendering/RootInlineBox.cpp

Index: Source/core/rendering/RootInlineBox.cpp
diff --git a/Source/core/rendering/RootInlineBox.cpp b/Source/core/rendering/RootInlineBox.cpp
index edeb3e03160fd5834abacdeceda4f94899756cd6..66577db776a2c4d42c4db241ce4c9eb2c15ea52f 100644
--- a/Source/core/rendering/RootInlineBox.cpp
+++ b/Source/core/rendering/RootInlineBox.cpp
@@ -53,9 +53,7 @@ RootInlineBox::RootInlineBox(RenderBlock* block)
     , m_lineBottom(0)
     , m_lineTopWithLeading(0)
     , m_lineBottomWithLeading(0)
-#if ENABLE(CSS3_TEXT)
     , m_maxLogicalTop(0)
-#endif // CSS3_TEXT
 {
     setIsHorizontal(block->isHorizontalWritingMode());
 }
@@ -293,10 +291,8 @@ LayoutUnit RootInlineBox::alignBoxesInBlockDirection(LayoutUnit heightOfBlock, G
         heightOfBlock += gridSnapAdjustment;
     }
 
-#if ENABLE(CSS3_TEXT)
     m_maxLogicalTop = 0;
     computeMaxLogicalTop(m_maxLogicalTop);
-#endif // CSS3_TEXT
 
     return heightOfBlock + maxHeight;
 }