Add support in generate scripts to handle Conditional

Source/core/svg/SVGTagNames.in

Index: Source/core/svg/SVGTagNames.in
diff --git a/Source/core/svg/SVGTagNames.in b/Source/core/svg/SVGTagNames.in
index 326b36242f1df77c8a291f3ecdc242432f2f8492..641203e0ecc1890f7e707c3487147c042d3e34dc 100644
--- a/Source/core/svg/SVGTagNames.in
+++ b/Source/core/svg/SVGTagNames.in
@@ -4,11 +4,9 @@ fallbackInterfaceName="SVGUnknownElement"
 fallbackJSInterfaceName="SVGElement"
 
 a
-#if ENABLE_SVG_FONTS
-altGlyph
-altGlyphDef
-altGlyphItem
-#endif
+altGlyph Conditional=SVG_FONTS
+altGlyphDef Conditional=SVG_FONTS
+altGlyphItem Conditional=SVG_FONTS
 animate noTypeHelpers
 animateColor interfaceName=SVGUnknownElement, JSInterfaceName=SVGElement, noConstructor
 animateMotion
@@ -47,30 +45,24 @@ feSpotLight
 feTile
 feTurbulence
 filter
-#if ENABLE_SVG_FONTS
-font
-font-face
-font-face-format
-font-face-name
-font-face-src
-font-face-uri
-#endif
+font Conditional=SVG_FONTS
+font-face Conditional=SVG_FONTS
+font-face-format Conditional=SVG_FONTS
+font-face-name Conditional=SVG_FONTS
+font-face-src Conditional=SVG_FONTS
+font-face-uri Conditional=SVG_FONTS
 foreignObject
 g
-#if ENABLE_SVG_FONTS
-glyph
-glyphRef
-hkern interfaceName=SVGHKernElement
-#endif
+glyph Conditional=SVG_FONTS
+glyphRef Conditional=SVG_FONTS
+hkern Conditional=SVG_FONTS, interfaceName=SVGHKernElement
 image
 line
 linearGradient
 marker
 mask
 metadata
-#if ENABLE_SVG_FONTS
-missing-glyph
-#endif
+missing-glyph Conditional=SVG_FONTS
 mpath interfaceName=SVGMPathElement
 path
 pattern
@@ -90,6 +82,4 @@ title
 tspan interfaceName=SVGTSpanElement
 use
 view
-#if ENABLE_SVG_FONTS
-vkern interfaceName=SVGVKernElement
-#endif
+vkern Conditional=SVG_FONTS, interfaceName=SVGVKernElement