DevTools: only allow status bar items in status bars.

Source/devtools/front_end/profiler/ProfilesPanel.js

Index: Source/devtools/front_end/profiler/ProfilesPanel.js
diff --git a/Source/devtools/front_end/profiler/ProfilesPanel.js b/Source/devtools/front_end/profiler/ProfilesPanel.js
index 01d40dee977d0cb9758dacd8efa318616fb8f216..76540791d4c6d0b6b252057b5458375c95ed3d8d 100644
--- a/Source/devtools/front_end/profiler/ProfilesPanel.js
+++ b/Source/devtools/front_end/profiler/ProfilesPanel.js
@@ -80,7 +80,10 @@ WebInspector.ProfileType.prototype = {
         return null;
     },
 
-    get statusBarItems()
+    /**
+     * @return {!Array.<!WebInspector.StatusBarItem>}
+     */
+    statusBarItems: function()
     {
         return [];
     },
@@ -453,25 +456,24 @@ WebInspector.ProfilesPanel = function()
     this.profileViews.classList.add("vbox");
     mainView.element.appendChild(this.profileViews);
 
-    var statusBarContainer = createElementWithClass("div", "profiles-status-bar");
-    mainView.element.insertBefore(statusBarContainer, mainView.element.firstChild);
-    this._statusBarElement = statusBarContainer.createChild("div", "status-bar");
+    this._statusBarElement = createElementWithClass("div", "profiles-status-bar");
+    mainView.element.insertBefore(this._statusBarElement, mainView.element.firstChild);
 
     this.sidebarElement().classList.add("profiles-sidebar-tree-box");
     var statusBarContainerLeft = createElementWithClass("div", "profiles-status-bar");
     this.sidebarElement().insertBefore(statusBarContainerLeft, this.sidebarElement().firstChild);
-    this._statusBarButtons = statusBarContainerLeft.createChild("div", "status-bar");
+    var statusBar = new WebInspector.StatusBar(statusBarContainerLeft);
 
     this.recordButton = new WebInspector.StatusBarButton("", "record-profile-status-bar-item");
     this.recordButton.addEventListener("click", this.toggleRecordButton, this);
-    this._statusBarButtons.appendChild(this.recordButton.element);
+    statusBar.appendStatusBarItem(this.recordButton);
 
     this.clearResultsButton = new WebInspector.StatusBarButton(WebInspector.UIString("Clear all profiles."), "clear-status-bar-item");
     this.clearResultsButton.addEventListener("click", this._reset, this);
-    this._statusBarButtons.appendChild(this.clearResultsButton.element);
+    statusBar.appendStatusBarItem(this.clearResultsButton);
 
-    this._profileTypeStatusBarItemsContainer = this._statusBarElement.createChild("div");
-    this._profileViewStatusBarItemsContainer = this._statusBarElement.createChild("div");
+    this._profileTypeStatusBar = new WebInspector.StatusBar(this._statusBarElement);
+    this._profileViewStatusBar = new WebInspector.StatusBar(this._statusBarElement);
 
     this._profileGroups = {};
     this._launcherView = new WebInspector.MultiProfileLauncherView(this);
@@ -499,7 +501,7 @@ WebInspector.ProfilesPanel.prototype = {
      */
     searchableView: function()
     {
-        return this.visibleView.searchableView();
+        return this.visibleView ? this.visibleView.searchableView() : null;
     },
 
     _createFileSelectorElement: function()
@@ -617,12 +619,10 @@ WebInspector.ProfilesPanel.prototype = {
     _updateProfileTypeSpecificUI: function()
     {
         this._updateRecordButton(this.recordButton.toggled());
-        this._profileTypeStatusBarItemsContainer.removeChildren();
-        var statusBarItems = this._selectedProfileType.statusBarItems;
-        if (statusBarItems) {
-            for (var i = 0; i < statusBarItems.length; ++i)
-                this._profileTypeStatusBarItemsContainer.appendChild(statusBarItems[i]);
-        }
+        this._profileTypeStatusBar.removeStatusBarItems();
+        var statusBarItems = this._selectedProfileType.statusBarItems();
+        for (var i = 0; i < statusBarItems.length; ++i)
+            this._profileTypeStatusBar.appendStatusBarItem(statusBarItems[i]);
     },
 
     _reset: function()
@@ -643,12 +643,12 @@ WebInspector.ProfilesPanel.prototype = {
 
         this._launcherView.detach();
         this.profileViews.removeChildren();
-        this._profileViewStatusBarItemsContainer.removeChildren();
+        this._profileViewStatusBar.removeStatusBarItems();
 
         this.removeAllListeners();
 
         this.recordButton.setVisible(true);
-        this._profileViewStatusBarItemsContainer.classList.remove("hidden");
+        this._profileViewStatusBar.element.classList.remove("hidden");
         this.clearResultsButton.element.classList.remove("hidden");
         this.profilesItemTreeElement.select();
         this._showLauncherView();
@@ -657,7 +657,7 @@ WebInspector.ProfilesPanel.prototype = {
     _showLauncherView: function()
     {
         this.closeVisibleView();
-        this._profileViewStatusBarItemsContainer.removeChildren();
+        this._profileViewStatusBar.removeStatusBarItems();
         this._launcherView.show(this.profileViews);
         this.visibleView = this._launcherView;
     },
@@ -800,12 +800,11 @@ WebInspector.ProfilesPanel.prototype = {
         var sidebarElement = profileTypeSection.sidebarElementForProfile(profile);
         sidebarElement.revealAndSelect();
 
-        this._profileViewStatusBarItemsContainer.removeChildren();
+        this._profileViewStatusBar.removeStatusBarItems();
 
-        var statusBarItems = view.statusBarItems;
-        if (statusBarItems)
-            for (var i = 0; i < statusBarItems.length; ++i)
-                this._profileViewStatusBarItemsContainer.appendChild(statusBarItems[i]);
+        var statusBarItems = view.statusBarItems();
+        for (var i = 0; i < statusBarItems.length; ++i)
+            this._profileViewStatusBar.appendStatusBarItem(statusBarItems[i]);
 
         return view;
     },