Remove support for -webkit-line-clamp

Source/core/css/CSSPrimitiveValueMappings.h

Index: Source/core/css/CSSPrimitiveValueMappings.h
diff --git a/Source/core/css/CSSPrimitiveValueMappings.h b/Source/core/css/CSSPrimitiveValueMappings.h
index e538b8fee5c16840e906177a131196e57512344c..f10fe0d936d4103dfa29d5dc76c00a7b3f87e732 100644
--- a/Source/core/css/CSSPrimitiveValueMappings.h
+++ b/Source/core/css/CSSPrimitiveValueMappings.h
@@ -41,7 +41,6 @@
 #include "core/platform/ThemeTypes.h"
 #include "core/platform/graphics/Path.h"
 #include "core/platform/graphics/TextRenderingMode.h"
-#include "core/rendering/style/LineClampValue.h"
 #include "core/rendering/style/RenderStyleConstants.h"
 #include "core/rendering/style/SVGRenderStyleDefs.h"
 #include "platform/text/TextDirection.h"
@@ -118,25 +117,6 @@ template<> inline CSSPrimitiveValue::operator float() const
     return 0.0f;
 }
 
-template<> inline CSSPrimitiveValue::CSSPrimitiveValue(LineClampValue i)
-    : CSSValue(PrimitiveClass)
-{
-    m_primitiveUnitType = i.isPercentage() ? CSS_PERCENTAGE : CSS_NUMBER;
-    m_value.num = static_cast<double>(i.value());
-}
-
-template<> inline CSSPrimitiveValue::operator LineClampValue() const
-{
-    if (m_primitiveUnitType == CSS_NUMBER)
-        return LineClampValue(clampTo<int>(m_value.num), LineClampLineCount);
-
-    if (m_primitiveUnitType == CSS_PERCENTAGE)
-        return LineClampValue(clampTo<int>(m_value.num), LineClampPercentage);
-
-    ASSERT_NOT_REACHED();
-    return LineClampValue();
-}
-
 template<> inline CSSPrimitiveValue::CSSPrimitiveValue(CSSReflectionDirection e)
     : CSSValue(PrimitiveClass)
 {