Remove unused global references from ui-legacy.js

This caught some leftover usages in ui itself, as well as the devices
pane which wasn't ported to ESM yet.

[email protected]

Change-Id: I48f01c3b982b68111fedd3cf4a26b91ed21204ff
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2124490
Reviewed-by: Paul Lewis <[email protected]>
Commit-Queue: Tim van der Lippe <[email protected]>
diff --git a/front_end/ui/SplitWidget.js b/front_end/ui/SplitWidget.js
index 8e5340a..75cd7fc 100644
--- a/front_end/ui/SplitWidget.js
+++ b/front_end/ui/SplitWidget.js
@@ -489,7 +489,7 @@
     this._showMode = showMode;
     this._saveShowModeToSettings();
     this._updateShowHideSidebarButton();
-    this.dispatchEventToListeners(SplitWidget.Events.ShowModeChanged, showMode);
+    this.dispatchEventToListeners(Events.ShowModeChanged, showMode);
     this.invalidateConstraints();
   }
 
@@ -564,7 +564,7 @@
     } else {
       // No need to recalculate this._sidebarSizeDIP and this._totalSizeDIP again.
       this.doResize();
-      this.dispatchEventToListeners(SplitWidget.Events.SidebarSizeChanged, this.sidebarSize());
+      this.dispatchEventToListeners(Events.SidebarSizeChanged, this.sidebarSize());
     }
   }
 
@@ -625,7 +625,7 @@
         if (this._mainWidget) {
           this._mainWidget.doResize();
         }
-        this.dispatchEventToListeners(SplitWidget.Events.SidebarSizeChanged, this.sidebarSize());
+        this.dispatchEventToListeners(Events.SidebarSizeChanged, this.sidebarSize());
         return;
       }
       this._animationFrameHandle = this.contentElement.window().requestAnimationFrame(boundAnimationFrame);