[DevTools] Remove layout editor experiment.

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

 /*
  * Copyright (C) 2013 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:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 /**
  * @implements {SDK.TargetManager.Observer}
  * @unrestricted
  */
 Elements.InspectElementModeController = class {
   constructor() {
     this._toggleSearchAction = UI.actionRegistry.action('elements.toggle-element-search');
-    if (Runtime.experiments.isEnabled('layoutEditor')) {
-      this._layoutEditorButton =
-          new UI.ToolbarToggle(Common.UIString('Toggle Layout Editor'), 'largeicon-layout-editor');
-      this._layoutEditorButton.addEventListener('click', this._toggleLayoutEditor, this);
-    }
-
     this._mode = Protocol.DOM.InspectMode.None;
     SDK.targetManager.addEventListener(SDK.TargetManager.Events.SuspendStateChanged, this._suspendStateChanged, this);
     SDK.targetManager.observeTargets(this, SDK.Target.Capability.DOM);
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetAdded(target) {
@@ skipping 13 matching lines @@
   }
 
   /**
    * @return {boolean}
    */
   isInInspectElementMode() {
     return this._mode === Protocol.DOM.InspectMode.SearchForNode ||
         this._mode === Protocol.DOM.InspectMode.SearchForUAShadowDOM;
   }
 
-  /**
-   * @return {boolean}
-   */
-  isInLayoutEditorMode() {
-    return this._mode === Protocol.DOM.InspectMode.ShowLayoutEditor;
-  }
-
   stopInspection() {
     if (this._mode && this._mode !== Protocol.DOM.InspectMode.None)
       this._toggleInspectMode();
   }
 
-  _toggleLayoutEditor() {
-    var mode = this.isInLayoutEditorMode() ? Protocol.DOM.InspectMode.None : Protocol.DOM.InspectMode.ShowLayoutEditor;
-    this._setMode(mode);
-  }
-
   _toggleInspectMode() {
     if (SDK.targetManager.allTargetsSuspended())
       return;
 
     var mode;
     if (this.isInInspectElementMode()) {
       mode = Protocol.DOM.InspectMode.None;
     } else {
       mode = Common.moduleSetting('showUAShadowDOM').get() ? Protocol.DOM.InspectMode.SearchForUAShadowDOM :
                                                              Protocol.DOM.InspectMode.SearchForNode;
     }
 
     this._setMode(mode);
   }
 
   /**
    * @param {!Protocol.DOM.InspectMode} mode
    */
   _setMode(mode) {
     this._mode = mode;
     for (var domModel of SDK.DOMModel.instances())
       domModel.setInspectMode(mode);
-
-    if (this._layoutEditorButton) {
-      this._layoutEditorButton.setEnabled(!this.isInInspectElementMode());
-      this._layoutEditorButton.setToggled(this.isInLayoutEditorMode());
-    }
-
-    this._toggleSearchAction.setEnabled(!this.isInLayoutEditorMode());
     this._toggleSearchAction.setToggled(this.isInInspectElementMode());
   }
 
   _suspendStateChanged() {
     if (!SDK.targetManager.allTargetsSuspended())
       return;
 
     this._mode = Protocol.DOM.InspectMode.None;
     this._toggleSearchAction.setToggled(false);
-    if (this._layoutEditorButton)
-      this._layoutEditorButton.setToggled(false);
   }
 };
 
 /**
  * @implements {UI.ActionDelegate}
  * @unrestricted
  */
 Elements.InspectElementModeController.ToggleSearchActionDelegate = class {
   /**
    * @override
    * @param {!UI.Context} context
    * @param {string} actionId
    * @return {boolean}
    */
   handleAction(context, actionId) {
     if (!Elements.inspectElementModeController)
       return false;
     Elements.inspectElementModeController._toggleInspectMode();
     return true;
   }
 };
 
-/**
- * @implements {UI.ToolbarItem.Provider}
- * @unrestricted
- */
-Elements.InspectElementModeController.LayoutEditorButtonProvider = class {
-  /**
-   * @override
-   * @return {?UI.ToolbarItem}
-   */
-  item() {
-    if (!Elements.inspectElementModeController)
-      return null;
-
-    return Elements.inspectElementModeController._layoutEditorButton;
-  }
-};
-
 /** @type {?Elements.InspectElementModeController} */
 Elements.inspectElementModeController =
     Runtime.queryParam('isSharedWorker') ? null : new Elements.InspectElementModeController();