Do not accept CSS-wide keywords for descriptors

third_party/WebKit/Source/core/css/CSSProperties.in

Index: third_party/WebKit/Source/core/css/CSSProperties.in
diff --git a/third_party/WebKit/Source/core/css/CSSProperties.in b/third_party/WebKit/Source/core/css/CSSProperties.in
index dd9a465ebe7663256e45ac43da84acb16e33359c..7bee0746533ee41fc2849d9857e1dd04786dad34 100644
--- a/third_party/WebKit/Source/core/css/CSSProperties.in
+++ b/third_party/WebKit/Source/core/css/CSSProperties.in
@@ -14,6 +14,11 @@
 // This doesn't currently work with alias_for.
 
 
+// - descriptor_only
+// These are actually descriptors and not CSS properties. Properties with
+// the same name as a descriptor do not get this flag.
+
+
 // - longhands=property;other-property
 // The property is a shorthand for several other properties.
 
@@ -443,17 +448,20 @@ z-index interpolable, type_name=int, custom_all
 // TODO(timloh): This seems wrong, most of these shouldn't reach the StyleBuilder
 
 all builder_skip
-font-display builder_skip, runtime_flag=CSSFontDisplay
-max-zoom builder_skip
-min-zoom builder_skip
-orientation builder_skip
 page builder_skip
-src builder_skip
-unicode-range builder_skip
-user-zoom builder_skip
 -webkit-font-size-delta builder_skip
 -webkit-text-decorations-in-effect inherited, builder_skip
 
+// Descriptors
+
+font-display descriptor_only, runtime_flag=CSSFontDisplay
+max-zoom descriptor_only
+min-zoom descriptor_only
+orientation descriptor_only
+src descriptor_only
+unicode-range descriptor_only
+user-zoom descriptor_only
+
 // Shorthands
 
 animation longhands=animation-name;animation-duration;animation-timing-function;animation-delay;animation-iteration-count;animation-direction;animation-fill-mode;animation-play-state