Initial step of removing CSS zoom related properties.

sky/engine/core/css/CSSProperties.in

 // This file specifies all the CSS properties we support and the necessary
 // information for our code generation. The various supported arguments
 // are described below with example usage
 
 
 // - alias_for=other-property
 // Properties specifying alias_for do not get their own enum and instead map
 // directly onto the CSSPropertyID they alias. Currently this means that the
 // UseCounter will not pick up on these (crbug.com/304855)
 
@@ skipping 78 matching lines @@
 font-stretch inherited, font, type_name=FontStretch, name_for_methods=Stretch
 font-style inherited, font, type_name=FontStyle, name_for_methods=Style
 font-variant inherited, font, type_name=FontVariant, name_for_methods=Variant
 font-variant-ligatures inherited, font, name_for_methods=VariantLigatures, converter=convertFontVariantLigatures
 font-weight animatable, inherited, font, type_name=FontWeight, name_for_methods=Weight, converter=convertFontWeight
 -webkit-font-feature-settings inherited, font, name_for_methods=FeatureSettings, converter=convertFontFeatureSettings
 -webkit-font-smoothing inherited, font, type_name=FontSmoothingMode
 -webkit-locale inherited, custom_value
 -webkit-text-orientation inherited, custom_value
 text-rendering inherited, font, type_name=TextRenderingMode
-zoom animatable, custom_all
 line-height animatable, inherited, getter=specifiedLineHeight, custom_value
 
 align-content
 align-items custom_all
 align-self custom_all
 backface-visibility
 background-attachment custom_all
 background-blend-mode custom_all
 background-clip custom_all
 background-color animatable, custom_all
@@ skipping 222 matching lines @@
 
 all builder_skip
 animation-delay runtime_flag=CSSAnimationUnprefixed, builder_skip
 animation-direction runtime_flag=CSSAnimationUnprefixed, builder_skip
 animation-duration runtime_flag=CSSAnimationUnprefixed, builder_skip
 animation-fill-mode runtime_flag=CSSAnimationUnprefixed, builder_skip
 animation-iteration-count runtime_flag=CSSAnimationUnprefixed, builder_skip
 animation-name runtime_flag=CSSAnimationUnprefixed, builder_skip
 animation-play-state runtime_flag=CSSAnimationUnprefixed, builder_skip
 animation-timing-function runtime_flag=CSSAnimationUnprefixed, builder_skip
-max-zoom builder_skip
-min-zoom builder_skip
 orientation builder_skip
 page builder_skip
 src builder_skip
 transition-delay builder_skip
 transition-duration builder_skip
 transition-property builder_skip
 transition-timing-function builder_skip
 unicode-range builder_skip
-user-zoom builder_skip
 -webkit-font-size-delta builder_skip
 -webkit-text-decorations-in-effect inherited, builder_skip
 
 // Shorthands
 
 animation runtime_flag=CSSAnimationUnprefixed, longhands=animation-name;animation-duration;animation-timing-function;animation-delay;animation-iteration-count;animation-direction;animation-fill-mode;animation-play-state
 background longhands=background-image;background-position-x;background-position-y;background-size;background-repeat-x;background-repeat-y;background-attachment;background-origin;background-clip;background-color
 background-position longhands=background-position-x;background-position-y
 background-repeat longhands=background-repeat-x;background-repeat-y
 border longhands=border-top-color;border-top-style;border-top-width;border-right-color;border-right-style;border-right-width;border-bottom-color;border-bottom-style;border-bottom-width;border-left-color;border-left-style;border-left-width
@@ skipping 51 matching lines @@
 -webkit-flex alias_for=flex
 -webkit-flex-basis alias_for=flex-basis
 -webkit-flex-direction alias_for=flex-direction
 -webkit-flex-flow alias_for=flex-flow
 -webkit-flex-grow alias_for=flex-grow
 -webkit-flex-shrink alias_for=flex-shrink
 -webkit-flex-wrap alias_for=flex-wrap
 -webkit-justify-content alias_for=justify-content
 -webkit-opacity alias_for=opacity
 -webkit-order alias_for=order