style: Conversion from NS_STYLE_BORDER_STYLE_* macro to enum class.

Converted NS_STYLE_BORDER_STYLE_* consts to enum class. Updated corresponding
values to enum class. reduced BCCornerInfo struct values to fit StyleBorderStyle
values inside struct. Added defaults to switches that do not fully cover all
instances of StyleBorderStyle.

Bug: 1460439
Reviewed-by: emilio

components/style/properties/gecko.mako.rs

@@ -1516,7 +1516,9 @@ fn static_assert() {
 
 
 <% border_style_keyword = Keyword("border-style",
-                                  "none solid double dotted dashed hidden groove ridge inset outset") %>
+                                  "none solid double dotted dashed hidden groove ridge inset outset",
+                                  gecko_enum_prefix="StyleBorderStyle",
+                                  gecko_inexhaustive=True) %>
 
 <% skip_border_longhands = " ".join(["border-{0}-{1}".format(x.ident, y)
                                      for x in SIDES

components/style/properties/longhands/border.mako.rs

@@ -63,7 +63,9 @@
 
 ${helpers.gecko_keyword_conversion(
     Keyword('border-style',
-    "none solid double dotted dashed hidden groove ridge inset outset"),
+    "none solid double dotted dashed hidden groove ridge inset outset",
+    gecko_enum_prefix="StyleBorderStyle",
+    gecko_inexhaustive=True),
     type="crate::values::specified::BorderStyle",
 )}
 

components/style/properties/longhands/column.mako.rs

@@ -83,7 +83,8 @@ ${helpers.single_keyword(
     "none hidden dotted dashed solid double groove ridge inset outset",
     products="gecko",
     extra_prefixes="moz",
-    gecko_constant_prefix="NS_STYLE_BORDER_STYLE",
+    gecko_enum_prefix="StyleBorderStyle",
+    gecko_inexhaustive=True,
     animation_value_type="discrete",
     spec="https://drafts.csswg.org/css-multicol/#propdef-column-rule-style",
 )}