DevTools: migrate InspectorView to tabbed view location.

third_party/WebKit/Source/devtools/front_end/layers/LayersPanel.js

Index: third_party/WebKit/Source/devtools/front_end/layers/LayersPanel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/layers/LayersPanel.js b/third_party/WebKit/Source/devtools/front_end/layers/LayersPanel.js
index 43074181c71d59d12748c6f60043c386885622ad..eb92eb0b3639adb9eeb04d9f77bec6995e0cc9f7 100644
--- a/third_party/WebKit/Source/devtools/front_end/layers/LayersPanel.js
+++ b/third_party/WebKit/Source/devtools/front_end/layers/LayersPanel.js
@@ -178,8 +178,6 @@ WebInspector.LayersPanel.LayerTreeRevealer.prototype = {
         if (!(snapshotData instanceof WebInspector.DeferredLayerTree))
             return Promise.reject(new Error("Internal error: not a WebInspector.DeferredLayerTree"));
         var panel = /** @type {!WebInspector.LayersPanel} */ (self.runtime.sharedInstance(WebInspector.LayersPanel));
-        WebInspector.inspectorView.setCurrentPanel(panel);
-        panel._showLayerTree(/** @type {!WebInspector.DeferredLayerTree} */ (snapshotData));
-        return Promise.resolve();
+        return WebInspector.viewManager.showView("layers").then(() => panel._showLayerTree(/** @type {!WebInspector.DeferredLayerTree} */ (snapshotData)));
     }
 }