Convert polygerrit to es6-modules

This change replace all HTML imports with es6-modules. The only exceptions are:
* gr-app.html file, which can be deleted only after updating the
  gerrit/httpd/raw/PolyGerritIndexHtml.soy file.
* dark-theme.html which is loaded via importHref. Must be updated manually
  later in a separate change.

This change was produced automatically by ./es6-modules-converter.sh script.
No manual changes were made.

Change-Id: I0c447dd8c05757741e2c940720652d01d9fb7d67
diff --git a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.js b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.js
index 6f458d1..0cd2d7c 100644
--- a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.js
+++ b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.js
@@ -14,33 +14,39 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-(function() {
-  'use strict';
+import '../../../scripts/bundled-polymer.js';
 
-  /** @extends Polymer.Element */
-  class GrTooltip extends Polymer.GestureEventListeners(
-      Polymer.LegacyElementMixin(
-          Polymer.Element)) {
-    static get is() { return 'gr-tooltip'; }
+import '../../../styles/shared-styles.js';
+import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners.js';
+import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin.js';
+import {PolymerElement} from '@polymer/polymer/polymer-element.js';
+import {htmlTemplate} from './gr-tooltip_html.js';
 
-    static get properties() {
-      return {
-        text: String,
-        maxWidth: {
-          type: String,
-          observer: '_updateWidth',
-        },
-        positionBelow: {
-          type: Boolean,
-          reflectToAttribute: true,
-        },
-      };
-    }
+/** @extends Polymer.Element */
+class GrTooltip extends GestureEventListeners(
+    LegacyElementMixin(
+        PolymerElement)) {
+  static get template() { return htmlTemplate; }
 
-    _updateWidth(maxWidth) {
-      this.updateStyles({'--tooltip-max-width': maxWidth});
-    }
+  static get is() { return 'gr-tooltip'; }
+
+  static get properties() {
+    return {
+      text: String,
+      maxWidth: {
+        type: String,
+        observer: '_updateWidth',
+      },
+      positionBelow: {
+        type: Boolean,
+        reflectToAttribute: true,
+      },
+    };
   }
 
-  customElements.define(GrTooltip.is, GrTooltip);
-})();
+  _updateWidth(maxWidth) {
+    this.updateStyles({'--tooltip-max-width': maxWidth});
+  }
+}
+
+customElements.define(GrTooltip.is, GrTooltip);
diff --git a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_html.js b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_html.js
index d78d554..5f9ce51 100644
--- a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_html.js
+++ b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_html.js
@@ -1,25 +1,22 @@
-<!--
-@license
-Copyright (C) 2016 The Android Open Source Project
+/**
+ * @license
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {html} from '@polymer/polymer/lib/utils/html-tag.js';
 
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
--->
-
-<link rel="import" href="/bower_components/polymer/polymer.html">
-<link rel="import" href="../../../styles/shared-styles.html">
-
-<dom-module id="gr-tooltip">
-  <template>
+export const htmlTemplate = html`
     <style include="shared-styles">
       :host {
         --gr-tooltip-arrow-size: .5em;
@@ -66,6 +63,4 @@
       [[text]]
       <i class="arrowPositionAbove arrow"></i>
     </div>
-  </template>
-  <script src="gr-tooltip.js"></script>
-</dom-module>
+`;
diff --git a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html
index 4c9b954..be5e26e 100644
--- a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html
@@ -18,15 +18,20 @@
 <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
 <title>gr-storage</title>
 
-<script src="/bower_components/webcomponentsjs/custom-elements-es5-adapter.js"></script>
+<script src="/node_modules/@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js"></script>
 
-<script src="/bower_components/webcomponentsjs/webcomponents-lite.js"></script>
-<script src="/bower_components/web-component-tester/browser.js"></script>
-<script src="../../../test/test-pre-setup.js"></script>
-<link rel="import" href="../../../test/common-test-setup.html"/>
-<link rel="import" href="gr-tooltip.html">
+<script src="/node_modules/@webcomponents/webcomponentsjs/webcomponents-lite.js"></script>
+<script src="/components/wct-browser-legacy/browser.js"></script>
+<script type="module" src="../../../test/test-pre-setup.js"></script>
+<script type="module" src="../../../test/common-test-setup.js"></script>
+<script type="module" src="./gr-tooltip.js"></script>
 
-<script>void(0);</script>
+<script type="module">
+import '../../../test/test-pre-setup.js';
+import '../../../test/common-test-setup.js';
+import './gr-tooltip.js';
+void(0);
+</script>
 
 <test-fixture id="basic">
   <template>
@@ -35,35 +40,37 @@
   </template>
 </test-fixture>
 
-<script>
-  suite('gr-tooltip tests', async () => {
-    await readyToTest();
-    let element;
-    setup(() => {
-      element = fixture('basic');
-    });
-
-    test('max-width is respected if set', () => {
-      element.text = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit' +
-          ', sed do eiusmod tempor incididunt ut labore et dolore magna aliqua';
-      element.maxWidth = '50px';
-      assert.equal(getComputedStyle(element).width, '50px');
-    });
-
-    test('the correct arrow is displayed', () => {
-      assert.equal(getComputedStyle(element.shadowRoot
-          .querySelector('.arrowPositionBelow')).display,
-      'none');
-      assert.notEqual(getComputedStyle(element.shadowRoot
-          .querySelector('.arrowPositionAbove'))
-          .display, 'none');
-      element.positionBelow = true;
-      assert.notEqual(getComputedStyle(element.shadowRoot
-          .querySelector('.arrowPositionBelow'))
-          .display, 'none');
-      assert.equal(getComputedStyle(element.shadowRoot
-          .querySelector('.arrowPositionAbove'))
-          .display, 'none');
-    });
+<script type="module">
+import '../../../test/test-pre-setup.js';
+import '../../../test/common-test-setup.js';
+import './gr-tooltip.js';
+suite('gr-tooltip tests', () => {
+  let element;
+  setup(() => {
+    element = fixture('basic');
   });
+
+  test('max-width is respected if set', () => {
+    element.text = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit' +
+        ', sed do eiusmod tempor incididunt ut labore et dolore magna aliqua';
+    element.maxWidth = '50px';
+    assert.equal(getComputedStyle(element).width, '50px');
+  });
+
+  test('the correct arrow is displayed', () => {
+    assert.equal(getComputedStyle(element.shadowRoot
+        .querySelector('.arrowPositionBelow')).display,
+    'none');
+    assert.notEqual(getComputedStyle(element.shadowRoot
+        .querySelector('.arrowPositionAbove'))
+        .display, 'none');
+    element.positionBelow = true;
+    assert.notEqual(getComputedStyle(element.shadowRoot
+        .querySelector('.arrowPositionBelow'))
+        .display, 'none');
+    assert.equal(getComputedStyle(element.shadowRoot
+        .querySelector('.arrowPositionAbove'))
+        .display, 'none');
+  });
+});
 </script>