DO NOT LAND. Revert of https://codereview.chromium.org/2797963002

third_party/WebKit/Source/core/css/ComputedStyleExtraFields.json5

Index: third_party/WebKit/Source/core/css/ComputedStyleExtraFields.json5
diff --git a/third_party/WebKit/Source/core/css/ComputedStyleExtraFields.json5 b/third_party/WebKit/Source/core/css/ComputedStyleExtraFields.json5
index eccee69bca0292b766bea9821ef4f812c3204079..23a19ba8b78e35834d041c2c732088a6d8d32427 100644
--- a/third_party/WebKit/Source/core/css/ComputedStyleExtraFields.json5
+++ b/third_party/WebKit/Source/core/css/ComputedStyleExtraFields.json5
@@ -102,21 +102,6 @@
       default_value: "false",
       has_custom_compare_and_copy: true,
     },
-    // These are set if we used viewport or rem units when resolving a length.
-    // TODO(shend): HasViewportUnits should be a monotonic_flag.
-    {
-      name: "HasViewportUnits",
-      field_template: "primitive",
-      default_value: "false",
-      type_name: "bool",
-      has_custom_compare_and_copy: true,
-    },
-    {
-      name: "HasRemUnits",
-      field_template: "monotonic_flag",
-      default_value: "false",
-      has_custom_compare_and_copy: true,
-    },
     // These properties only have generated storage, and their methods are handwritten in ComputedStyle.
     // TODO(shend): Remove these fields and delete the 'storage_only' template.
     {