DevTools: get rid of getters and setters in StatusBarButton.

Source/devtools/front_end/resources/ApplicationCacheItemsView.js

Index: Source/devtools/front_end/resources/ApplicationCacheItemsView.js
diff --git a/Source/devtools/front_end/resources/ApplicationCacheItemsView.js b/Source/devtools/front_end/resources/ApplicationCacheItemsView.js
index be5caeddab31a9674d44c87d3bf7e50a7f5d5d12..51e29df1a1a40315153d673bb353481cf40ff1c8 100644
--- a/Source/devtools/front_end/resources/ApplicationCacheItemsView.js
+++ b/Source/devtools/front_end/resources/ApplicationCacheItemsView.js
@@ -38,7 +38,7 @@ WebInspector.ApplicationCacheItemsView = function(model, frameId)
 
     // FIXME: Needs better tooltip. (Localized)
     this.deleteButton = new WebInspector.StatusBarButton(WebInspector.UIString("Delete"), "delete-storage-status-bar-item");
-    this.deleteButton.visible = false;
+    this.deleteButton.setVisible(false);
     this.deleteButton.addEventListener("click", this._deleteButtonClicked, this);
 
     this.connectivityIcon = createElement("div");
@@ -88,7 +88,7 @@ WebInspector.ApplicationCacheItemsView.prototype = {
 
     willHide: function()
     {
-        this.deleteButton.visible = false;
+        this.deleteButton.setVisible(false);
     },
 
     _maybeUpdate: function()
@@ -164,7 +164,7 @@ WebInspector.ApplicationCacheItemsView.prototype = {
             delete this._resources;
 
             this._emptyView.show(this.element);
-            this.deleteButton.visible = false;
+            this.deleteButton.setVisible(false);
             if (this._dataGrid)
                 this._dataGrid.element.classList.add("hidden");
             return;
@@ -183,7 +183,7 @@ WebInspector.ApplicationCacheItemsView.prototype = {
         this._dataGrid.autoSizeColumns(20, 80);
         this._dataGrid.element.classList.remove("hidden");
         this._emptyView.detach();
-        this.deleteButton.visible = true;
+        this.deleteButton.setVisible(true);
 
         // FIXME: For Chrome, put creationTime and updateTime somewhere.
         // NOTE: localizedString has not yet been added.