DevTools: Release shadow-editor from under experiments

BUG=639095

Review-Url: https://codereview.chromium.org/2322683002
Cr-Commit-Position: refs/heads/master@{#417307}

third_party/WebKit/Source/devtools/front_end/elements/StylesSidebarPane.js

@@ -3060,7 +3060,7 @@ WebInspector.StylesSidebarPropertyRenderer.prototype = {
             return valueElement;
 
         if (this._shadowHandler && (this._propertyName === "box-shadow" || this._propertyName === "text-shadow" || this._propertyName === "-webkit-box-shadow")
-                && !WebInspector.CSSMetadata.VariableRegex.test(this._propertyValue) && Runtime.experiments.isEnabled("shadowEditor")) {
+                && !WebInspector.CSSMetadata.VariableRegex.test(this._propertyValue)) {
             valueElement.appendChild(this._shadowHandler(this._propertyValue, this._propertyName));
             valueElement.normalize();
             return valueElement;

third_party/WebKit/Source/devtools/front_end/main/Main.js

@@ -96,7 +96,6 @@ WebInspector.Main.prototype = {
         Runtime.experiments.register("timelineShowAllEvents", "Show all events on Timeline", true);
         Runtime.experiments.register("timelineShowAllProcesses", "Show all processes on Timeline", true);
         Runtime.experiments.register("securityPanel", "Security panel");
-        Runtime.experiments.register("shadowEditor", "Shadow editor", true);
         Runtime.experiments.register("sourceDiff", "Source diff");
         Runtime.experiments.register("timelineFlowEvents", "Timeline flow events", true);
         Runtime.experiments.register("timelineInvalidationTracking", "Timeline invalidation tracking", true);