Revert of Implements CSSPropertyAPI for the margin properties.

third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp

Index: third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
index edb71a66469521057f31cc75cbf3bf0b788b08d6..0327c7be2dab5ce7ccdc74d8c65e9cf1c8681194 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
@@ -2085,6 +2085,22 @@
     case CSSPropertyWebkitLogicalWidth:
     case CSSPropertyWebkitLogicalHeight:
       return CSSPropertyLengthUtils::consumeWidthOrHeight(m_range, m_context);
+    case CSSPropertyMarginTop:
+    case CSSPropertyMarginRight:
+    case CSSPropertyMarginBottom:
+    case CSSPropertyMarginLeft:
+    case CSSPropertyBottom:
+    case CSSPropertyLeft:
+    case CSSPropertyRight:
+    case CSSPropertyTop:
+      return CSSPropertyMarginUtils::consumeMarginOrOffset(
+          m_range, m_context->mode(), UnitlessQuirk::Allow);
+    case CSSPropertyWebkitMarginStart:
+    case CSSPropertyWebkitMarginEnd:
+    case CSSPropertyWebkitMarginBefore:
+    case CSSPropertyWebkitMarginAfter:
+      return CSSPropertyMarginUtils::consumeMarginOrOffset(
+          m_range, m_context->mode(), UnitlessQuirk::Forbid);
     case CSSPropertyScrollSnapDestination:
     case CSSPropertyObjectPosition:
     case CSSPropertyPerspectiveOrigin: