Generate enum/getters/setters/mappings for user-select.

third_party/WebKit/Source/core/css/CSSValueIDMappings.h

Index: third_party/WebKit/Source/core/css/CSSValueIDMappings.h
diff --git a/third_party/WebKit/Source/core/css/CSSValueIDMappings.h b/third_party/WebKit/Source/core/css/CSSValueIDMappings.h
index 260e779c2bc8fc82e486da986609983035c55089..cca59a6fb118975958775800e520f26dc5e3c9ba 100644
--- a/third_party/WebKit/Source/core/css/CSSValueIDMappings.h
+++ b/third_party/WebKit/Source/core/css/CSSValueIDMappings.h
@@ -83,6 +83,13 @@ inline EDisplay CssValueIDToPlatformEnum(CSSValueID v) {
   return detail::cssValueIDToPlatformEnumGenerated<EDisplay>(v);
 }
 
+template <>
+inline EUserSelect CssValueIDToPlatformEnum(CSSValueID v) {
+  if (v == CSSValueAuto)
+    return EUserSelect::kText;
+  return detail::cssValueIDToPlatformEnumGenerated<EUserSelect>(v);
+}
+
 }  // namespace blink
 
 #endif