Cleanup Tool WebUI: Add HTML content and styling with dummy JS

chrome/browser/resources/cleanup_tool/toolbar.html

Index: chrome/browser/resources/cleanup_tool/toolbar.html
diff --git a/chrome/browser/resources/cleanup_tool/toolbar.html b/chrome/browser/resources/cleanup_tool/toolbar.html
new file mode 100644
index 0000000000000000000000000000000000000000..7180a88bb1723c24245b5ee3b9c3af933606006e
--- /dev/null
+++ b/chrome/browser/resources/cleanup_tool/toolbar.html
@@ -0,0 +1,26 @@
+<link rel="import" href="chrome://resources/html/assert.html">
+<link rel="import" href="chrome://resources/html/cr.html">
+<link rel="import" href="chrome://resources/html/polymer.html">
+
+<dom-module id="cleanup-tool-toolbar">
+  <template>
+    <style>
+      :host {
+        align-items: center;
+        background: var(--md-toolbar-color);
+        color: white;
+        display: flex;
+        min-height: 56px;
+      }
+
+      #page-title {
+        -webkit-padding-start: 18px;
+        font-size: 123%;
+        overflow: hidden;
+        white-space: nowrap;
+      }
+    </style>
+    <div id="page-title">$i18n{title}</div>
+  </template>
+  <script src="chrome://cleanup/toolbar.js"></script>
+</dom-module>