DevTools: Add "inset" and "none" values for "box-shadow" property in CSSMetadata

Source/devtools/front_end/CSSMetadata.js

 /*
  * Copyright (C) 2010 Nikita Vasilyev. All rights reserved.
  * Copyright (C) 2010 Joseph Pecoraro. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 196 matching lines @@
     "text-overline-mode": { values: [
         "continuous", "skip-white-space"
     ] },
     "-webkit-background-composite": { values: [
         "highlight", "clear", "copy", "source-over", "source-in", "source-out", "source-atop", "destination-over",
         "destination-in", "destination-out", "destination-atop", "xor", "plus-darker", "plus-lighter"
     ] },
     "border-left-width": { values: [
         "medium", "thick", "thin"
     ] },
+    "box-shadow": { values: [
+        "inset", "none"
+    ] },
     "-webkit-writing-mode": { values: [
         "lr", "rl", "tb", "lr-tb", "rl-tb", "tb-rl", "horizontal-tb", "vertical-rl", "vertical-lr", "horizontal-bt"
     ] },
     "text-line-through-mode": { values: [
         "continuous", "skip-white-space"
     ] },
     "border-collapse": { values: [
         "collapse", "separate"
     ] },
     "page-break-inside": { values: [
@@ skipping 421 matching lines @@
     "background-position-x": { m: "background" },
     "background-position-y": { m: "background" },
     "background-repeat-x": { m: "background" },
     "background-repeat-y": { m: "background" },
     "border-top": { m: "background" },
     "border-right": { m: "background" },
     "border-bottom": { m: "background" },
     "border-left": { m: "background" },
     "border-radius": { m: "background" },
     "bottom": { m: "visuren" },
-    "box-shadow": { m: "background" },
     "color": { m: "color", a: "foreground" },
     "counter-increment": { m: "generate" },
     "counter-reset": { m: "generate" },
     "grid-definition-columns": { m: "grid" },
     "grid-definition-rows": { m: "grid" },
     "height": { m: "box" },
     "image-orientation": { m: "images" },
     "left": { m: "visuren" },
     "list-style": { m: "lists" },
     "min-height": { m: "box" },
@@ skipping 320 matching lines @@
 
     /**
      * @param {string} longhand
      * @return {?Array.<string>}
      */
     shorthands: function(longhand)
     {
         return this._shorthands[longhand];
     }
 }