MD Settings: Certificate manager, move "Import" button to the tab level.

chrome/browser/resources/settings/certificate_manager_page/certificate_list.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview 'settings-certificate-list' is an element that displays a list
  * of certificates.
  */
 Polymer({
   is: 'settings-certificate-list',
 
   properties: {
     /** @type {!Array<!Certificate>} */
     certificates: {
       type: Array,
       value: function() { return []; },
     },
 
     /** @type {!settings.CertificateType} */
     certificateType: String,
   },
+
+  /**
+   * @return {string}
+   * @private
+   */
+  getDescription_: function() {
+    var get = function(string) {
+      return loadTimeData.getString(
+          'certificateManager' + string + 'Description');
+    };
+
+    switch (this.certificateType) {
+      case settings.CertificateType.PERSONAL:
+        return get('YourCertificates');

[Dan Beam, 2016/04/01 18:38:02]

I would recommend not splitting up these identifiers like this.  If I were you,
I'd do:

  behaviors: [I18nBehavior],

and later I think all of these will fit on 1 line:

  return this.i18n('certificateManagerYourCertificatesDescription');

[dpapad, 2016/04/01 21:13:17]

Done. Also modified 18n() definition to call getString instead of getStringF
depending on number of arguments.

+      case settings.CertificateType.SERVER:
+        return get('Servers');
+      case settings.CertificateType.CA:
+        return get('Authorities');
+      case settings.CertificateType.OTHER:
+        return get('Others');
+    }
+
+    assertNotReached();
+  },
+
+  /**
+   * @return {boolean}
+   * @private
+   */
+  canImport_: function() {
+    return this.certificateType != settings.CertificateType.OTHER;
+  },
+
+  /**
+   * Handles a rejected Promise returned from |browserProxy_|.
+   * @param {null|!CertificatesError|!CertificatesImportError} error
+   * @private
+   */
+  onRejected_: function(error) {
+    if (error === null) {
+      // Nothing to do here. Null indicates that the user clicked "cancel" on
+      // a native file chooser dialog.
+      return;
+    }
+
+    // Otherwise propagate the error to the parents, such that a dialog
+    // displaying the error will be shown.
+    this.fire('certificates-error', error);
+  },
+
+
+  /** @private */
+  dispatchImportActionEvent_: function() {
+    this.fire(
+        settings.CertificateActionEvent,
+        /** @type {!CertificateActionEventDetail} */ ({
+          action: settings.CertificateAction.IMPORT,
+          subnode: null,
+          certificateType: this.certificateType,
+        }));
+  },
+
+  /** @private */
+  onImportTap_: function() {
+    var browserProxy = settings.CertificatesBrowserProxyImpl.getInstance();
+    if (this.certificateType == settings.CertificateType.PERSONAL) {
+      browserProxy.importPersonalCertificate(false).then(
+          function(showPasswordPrompt) {
+            if (showPasswordPrompt) {
+              this.dispatchImportActionEvent_();
+            }

[Dan Beam, 2016/04/01 18:38:02]

nit: no curlies

[dpapad, 2016/04/01 21:13:17]

Done.

+          }.bind(this),
+          this.onRejected_.bind(this));
+    } else if (this.certificateType == settings.CertificateType.CA) {
+      browserProxy.importCaCertificate().then(
+          function(certificateName) {
+            this.dispatchImportActionEvent_();
+          }.bind(this),
+          this.onRejected_.bind(this));
+    } else if (this.certificateType == settings.CertificateType.SERVER) {
+      browserProxy.importServerCertificate().catch(
+          this.onRejected_.bind(this));
+    } else {
+      assertNotReached();
+    }
+  },
 });