MD Settings: Bluetooth: Show policy indicator when disabled by policy

BUG=612846
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation;master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2143823002
Cr-Commit-Position: refs/heads/master@{#406662}

chrome/browser/chromeos/settings/stub_cros_settings_provider.cc

@@ -68,6 +68,7 @@ void StubCrosSettingsProvider::SetDefaults() {
   values_.SetBoolean(kAccountsPrefSupervisedUsersEnabled, true);
   values_.SetBoolean(kAccountsPrefShowUserNamesOnSignIn, true);
   values_.SetValue(kAccountsPrefUsers, base::WrapUnique(new base::ListValue));
+  values_.SetBoolean(kAllowBluetooth, true);
   values_.SetBoolean(kAttestationForContentProtectionEnabled, true);
   values_.SetBoolean(kStatsReportingPref, true);
   values_.SetValue(kAccountsPrefDeviceLocalAccounts,

chrome/browser/extensions/api/settings_private/prefs_util.cc

@@ -243,6 +243,8 @@ const PrefsUtil::TypedPrefMap& PrefsUtil::GetWhitelistedKeys() {
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)["cros.metrics.reportingEnabled"] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
+  (*s_whitelist)["cros.device.allow_bluetooth"] =
+      settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)["cros.device.attestation_for_content_protection_enabled"] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)["settings.internet.wake_on_wifi_darkconnect"] =
@@ -331,7 +333,7 @@ std::unique_ptr<settings_private::PrefObject> PrefsUtil::GetCrosSettingsPref(
 
 #if defined(OS_CHROMEOS)
   const base::Value* value = CrosSettings::Get()->GetPref(name);
-  DCHECK(value);
+  DCHECK(value) << "Pref not found: " << name;
   pref_object->key = name;
   pref_object->type = GetType(name, value->GetType());
   pref_object->value.reset(value->DeepCopy());

chrome/browser/resources/settings/advanced_page/advanced_page.html

@@ -48,7 +48,8 @@
       <template is="dom-if" if="[[showPage(pageVisibility.bluetooth)]]" restamp>
         <settings-section page-title="$i18n{bluetoothPageTitle}"
             current-route="[[currentRoute]]" section="bluetooth">
-          <settings-bluetooth-page current-route="{{currentRoute}}">
+          <settings-bluetooth-page prefs="{{prefs}}"
+              current-route="{{currentRoute}}">
           </settings-bluetooth-page>
         </settings-section>
       </template>

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html

@@ -6,6 +6,7 @@
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
+<link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_indicator.html">
 <link rel="import" href="/icons.html">
 <link rel="import" href="/settings_page/settings_animated_pages.html">
 <link rel="import" href="/settings_shared_css.html">
@@ -55,6 +56,10 @@
                 disabled="[[!adapterState.available]]"
                 on-change="onBluetoothEnabledChange_">
             </paper-toggle-button>
+            <cr-policy-pref-indicator
+                pref="[[prefs.cros.device.allow_bluetooth]]"
+                hidden="[[prefs.cros.device.allow_bluetooth.value]]">
+            </cr-policy-pref-indicator>
           </div>
         </div>
         <iron-collapse opened="[[canShowDeviceList_(bluetoothEnabled,

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js

@@ -95,6 +95,12 @@ Polymer({
     /** The translated error message to show when a connect error occurs. */
     errorMessage: String,
 
+    /** Preferences state. */
+    prefs: {
+      type: Object,
+      notify: true,
+    },
+
     /**
      * Interface for bluetooth calls. May be overriden by tests.
      * @type {Bluetooth}