chromeos: Add Power device page to chrome://md-settings.

chrome/browser/resources/settings/device_page/device_page.html

Index: chrome/browser/resources/settings/device_page/device_page.html
diff --git a/chrome/browser/resources/settings/device_page/device_page.html b/chrome/browser/resources/settings/device_page/device_page.html
index bd77189c05684a9d95df3a575cc1a15988b465f5..92a32c947711c5aa97355b75c83ca09c4b063775 100644
--- a/chrome/browser/resources/settings/device_page/device_page.html
+++ b/chrome/browser/resources/settings/device_page/device_page.html
@@ -8,6 +8,7 @@
 <link rel="import" href="display.html">
 <link rel="import" href="keyboard.html">
 <link rel="import" href="pointers.html">
+<link rel="import" href="power.html">
 <link rel="import" href="storage.html">
 <link rel="import" href="stylus.html">
 <link rel="import" href="../prefs/prefs.html">
@@ -57,31 +58,11 @@
               aria-label="$i18n{storageTitle}"></button>
         </div>
         <template is="dom-if" if="[[enablePowerSettings_]]">
-          <div id="powerRow" class="settings-box two-line">
-            <div class="start">
-              <div>[[powerLabel_]]</div>
-              <div class="secondary">[[batteryStatus_.statusText]]</div>
-            </div>
-            <div class="md-select-wrapper"
-                hidden$="[[!showPowerDropdown_]]">
-              <select id="powerSource" class="md-select"
-                  on-change="onPowerSourceChange_">
-                <option value=""
-                    selected$="[[isEqual_('', selectedPowerSourceId_)]]">
-                  $i18n{powerSourceBattery}
-                </option>
-                <template is="dom-repeat" items="[[powerSources_]]">
-                  <option value="[[item.id]]"
-                      selected$="[[isEqual_(item.id, selectedPowerSourceId_)]]">
-                    [[item.description]]
-                  </option>
-                </template>
-              </select>
-              <span class="md-select-underline"></span>
-            </div>
-            <div hidden$="[[showPowerDropdown_]]">
-              [[powerSourceName_]]
-            </div>
+          <div id="powerRow" class="settings-box" on-tap="onPowerTap_"
+              actionable>
+            <div class="start">$i18n{powerTitle}</div>
+            <button class="subpage-arrow" is="paper-icon-button-light"
+                arial-label="$i18n{powerTitle}"></button>
           </div>
         </template>
       </neon-animatable>
@@ -122,6 +103,14 @@
           <settings-storage></settings-storage>
         </settings-subpage>
       </template>
+      <template is="dom-if" route-path="/power">

[stevenjb, 2017/03/01 17:19:43]

This is a subtle issue I just learned about:
Since #powerRow is conditional on if="[[enablePowerSettings_]], we need to set
the following here:

no-search$="[[!enablePowerSettings_]]

Otherwise the search code will look for #powerRow and throw an error when it
fails to find it.

It would also be possible to put this subpage (including the route-path dom-if)
inside a dom-if with if="[[enablePowerSettings_]], however that may break direct
navigation, depending on how enablePowerSettings_ is set, so I would recommend
just setting no-search.

[Daniel Erat, 2017/03/01 23:01:53]

Done.

+        <settings-subpage
+            associated-control="[[$$('#powerRow')]]"
+            page-title="$i18n{powerTitle}">
+          <settings-power enable-power-settings="[[enablePowerSettings_]]">
+          </settings-power>
+        </settings-subpage>
+      </template>
     </settings-animated-pages>
   </template>
   <script src="device_page.js"></script>