Split has_custom_compare_and_copy in ComputedStyleExtraFields.json5.

third_party/WebKit/Source/core/style/ComputedStyle.cpp

Index: third_party/WebKit/Source/core/style/ComputedStyle.cpp
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.cpp b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
index 1e9358102135f0785e46ecfd5f349beab7313000..78e795495a501df7730f35614125911db9e17c8d 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.cpp
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
@@ -338,10 +338,6 @@ void ComputedStyle::CopyNonInheritedFromCached(const ComputedStyle& other) {
   // bunch of stuff other than real style data.
   // See comments for each skipped flag below.
 
-  // These are not generated in ComputedStyleBase
-  SetHasViewportUnits(other.HasViewportUnits());
-  SetHasRemUnitsInternal(other.HasRemUnits());
-
   // Correctly set during selector matching:
   // m_styleType
   // m_pseudoBits