Hide the search bar in Kaleidoscope

We don't have search available for now.

Change-Id: I7c363ead61f46af56c03d7f73f1f25e436517d09
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2339283Reviewed-by: Tommy Steimel <steimel@chromium.org>
Reviewed-by: Esmael Elmoslimany <aee@chromium.org>
Commit-Queue: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795199}

chrome/browser/resources/kaleidoscope/OWNERS

+file://chrome/browser/media/kaleidoscope/OWNERS
+
+# COMPONENT: Internals>Media>UI>Kaleidoscope

chrome/browser/resources/kaleidoscope/toolbar.html

@@ -8,4 +8,4 @@
     z-index: 1;
   }
 </style>
-<cr-toolbar id="toolbar" show-menu></cr-toolbar>
+<cr-toolbar id="toolbar" show-menu show-search="[[showSearch]]"></cr-toolbar>

chrome/browser/resources/kaleidoscope/toolbar.js

@@ -14,6 +14,13 @@ class KaleidoscopeToolbarElement extends PolymerElement {
   static get template() {
     return html`{__html_template__}`;
   }
+
+  static get properties() {
+    return {
+      // Controls whether the search field is shown.
+      showSearch: {type: Boolean, value: false},
+    };
+  }
 }
 
 customElements.define(