Add `contentPartner` configuration option

Add an option that enables the embedder to configure a content
provider/partner banner to be shown in the client, indicating who is
providing the content.

src/annotator/config/index.js

@@ -29,7 +29,7 @@ import { urlFromLinkTag } from './url-from-link-tag';
  */
 function configurationKeys(appContext) {
   const contexts = {
-    annotator: ['clientUrl', 'subFrameIdentifier'],
+    annotator: ['clientUrl', 'contentPartner', 'subFrameIdentifier'],
     sidebar: [
       'appType',
       'annotations',
@@ -106,6 +106,11 @@ const configDefinitions = {
     defaultValue: null,
     getValue: settings => settings.clientUrl,
   },
+  contentPartner: {
+    allowInBrowserExt: false,
+    defaultValue: null,
+    getValue: getHostPageSetting,
+  },
   enableExperimentalNewNoteButton: {
     allowInBrowserExt: false,
     defaultValue: null,

src/annotator/guest.js

@@ -180,7 +180,9 @@ export class Guest {
      * Integration that handles document-type specific functionality in the
      * guest.
      */
-    this._integration = createIntegration(this);
+    this._integration = createIntegration(this, {
+      contentPartner: config.contentPartner,
+    });
 
     /**
      * Channel for host-guest communication.

src/annotator/integrations/index.js

@@ -7,6 +7,7 @@ import {
 
 /**
  * @typedef {import('../../types/annotator').Annotator} Annotator
+ * @typedef {import('../../types/annotator').ContentPartner} ContentPartner
  * @typedef {import('../../types/annotator').Integration} Integration
  */
 
@@ -15,11 +16,14 @@ import {
  * guest functionality.
  *
  * @param {Annotator} annotator
+ * @param {object} options
+ *   @param {ContentPartner} [options.contentPartner] - Content partner banner to show,
+ *     if supported by the integration.
  * @return {Integration}
  */
-export function createIntegration(annotator) {
+export function createIntegration(annotator, { contentPartner } = {}) {
   if (isPDF()) {
-    return new PDFIntegration(annotator);
+    return new PDFIntegration(annotator, { contentPartner });
   }
 
   const vsFrameRole = vitalSourceFrameRole();

src/types/annotator.js

@@ -174,7 +174,7 @@
  */
 
 /**
- * Name of a content partner to show branding for.
+ * Specifies a content partner/provider to show branding for.
  *
  * @typedef {'jstor'} ContentPartner
  */