Move table content styling into separate element from list view

Some admin tables (for example plugins) don't have APIs that support
filtering and pagination. It is still advantageous to share styles,
so pull that out into a separate element.

Change-Id: Iad2b40d9af3cc53351973c7c456f1110424a14df

polygerrit-ui/app/elements/shared/gr-list-view/gr-list-view.html

@@ -13,7 +13,7 @@ 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="./gr-styled-table.html">
 <link rel="import" href="../../../behaviors/base-url-behavior/base-url-behavior.html">
 <link rel="import" href="../../../behaviors/gr-url-encoding-behavior.html">
 <link rel="import" href="../../../bower_components/polymer/polymer.html">
@@ -47,51 +47,6 @@ limitations under the License.
       nav a:first-of-type {
         margin-right: .5em;
       }
-      ::content {
-        display: flex;
-        flex-direction: column;
-      }
-
-      ::content .loading {
-        display: none;
-      }
-
-      ::content #list {
-        border-collapse: collapse;
-        width: 100%;
-      }
-      ::content #list tr.table {
-        border-bottom: 1px solid #eee;
-      }
-      ::content #list td {
-        flex-shrink: 0;
-        padding: .3em .5em;
-      }
-      ::content #list th {
-        background-color: #ddd;
-        border-bottom: 1px solid #eee;
-        font-weight: bold;
-        padding: .3em .5em;
-        text-align: left;
-      }
-      ::content #list a {
-        color: var(--default-text-color);
-        text-decoration: none;
-      }
-      ::content #list a:hover {
-        text-decoration: underline;
-      }
-      ::content #list .description {
-        width: 70%;
-      }
-      ::content #list .loadingMsg {
-        color: #666;
-        display: block;
-        padding: 1em var(--default-horizontal-margin);
-      }
-      ::content #list .loadingMsg:not(.loading) {
-        display: none;
-      }
     </style>
     <div id="filterContainer">
       <label>Filter:</label>
@@ -100,7 +55,9 @@ limitations under the License.
           id="filter"
           bind-value="{{_filter}}">
     </div>
-    <content></content>
+    <gr-styled-table>
+      <content></content>
+    </gr-styled-table>
     <nav>
       <a id="prevArrow"
           href$="[[_computeNavLink(offset, -1, itemsPerPage, filter)]]"

polygerrit-ui/app/elements/shared/gr-list-view/gr-list-view_test.html

@@ -77,8 +77,7 @@ limitations under the License.
         assert.equal(url, '/admin/projects/q/filter:test');
         done();
       });
-      const e = {target: {value: 'test'}};
-      element._onValueChange(e);
+      element._filterChanged('test');
     });
 
     test('next button', done => {

polygerrit-ui/app/elements/shared/gr-list-view/gr-styled-table.html

@@ -0,0 +1,77 @@
+<!--
+Copyright (C) 2017 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.
+-->
+
+<link rel="import" href="../../../bower_components/polymer/polymer.html">
+<link rel="import" href="../../../styles/shared-styles.html">
+
+<dom-module id="gr-styled-table">
+  <template>
+    <style include="shared-styles">
+      ::content {
+        display: flex;
+        flex-direction: column;
+      }
+      ::content .loading {
+        display: none;
+      }
+      ::content #list {
+        border-collapse: collapse;
+        width: 100%;
+      }
+      ::content #list tr.table {
+        border-bottom: 1px solid #eee;
+      }
+      ::content #list td {
+        flex-shrink: 0;
+        padding: .3em .5em;
+      }
+      ::content #list th {
+        background-color: #ddd;
+        border-bottom: 1px solid #eee;
+        font-weight: bold;
+        padding: .3em .5em;
+        text-align: left;
+      }
+      ::content #list a {
+        color: var(--default-text-color);
+        text-decoration: none;
+      }
+      ::content #list a:hover {
+        text-decoration: underline;
+      }
+      ::content #list .description {
+        width: 70%;
+      }
+      ::content #list .loadingMsg {
+        color: #666;
+        display: block;
+        padding: 1em var(--default-horizontal-margin);
+      }
+      ::content #list .loadingMsg:not(.loading) {
+        display: none;
+      }
+    </style>
+    <content></content>
+  </template>
+   <script>
+    (function() {
+      'use strict';
+      Polymer({
+        is: 'gr-styled-table',
+      });
+    })();
+  </script>
+</dom-module>

polygerrit-ui/app/test/index.html

@@ -114,6 +114,7 @@ limitations under the License.
     'shared/gr-js-api-interface/gr-js-api-interface_test.html',
     'shared/gr-linked-chip/gr-linked-chip_test.html',
     'shared/gr-linked-text/gr-linked-text_test.html',
+    'shared/gr-list-view/gr-list-view_test.html',
     'shared/gr-rest-api-interface/gr-rest-api-interface_test.html',
     'shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html',
     'shared/gr-select/gr-select_test.html',