Adds link for Cloud deployment settings

src/core/public/chrome/chrome_service.mock.ts

@@ -74,13 +74,16 @@ const createStartContractMock = () => {
     setHelpSupportUrl: jest.fn(),
     getIsNavDrawerLocked$: jest.fn(),
     getNavType$: jest.fn(),
+    getCustomNavLink$: jest.fn(),
+    setCustomNavLink: jest.fn(),
   };
   startContract.navLinks.getAll.mockReturnValue([]);
   startContract.getBrand$.mockReturnValue(new BehaviorSubject({} as ChromeBrand));
   startContract.getIsVisible$.mockReturnValue(new BehaviorSubject(false));
   startContract.getApplicationClasses$.mockReturnValue(new BehaviorSubject(['class-name']));
   startContract.getBadge$.mockReturnValue(new BehaviorSubject({} as ChromeBadge));
   startContract.getBreadcrumbs$.mockReturnValue(new BehaviorSubject([{} as ChromeBreadcrumb]));
+  startContract.getCustomNavLink$.mockReturnValue(new BehaviorSubject(undefined));
   startContract.getHelpExtension$.mockReturnValue(new BehaviorSubject(undefined));
   startContract.getIsNavDrawerLocked$.mockReturnValue(new BehaviorSubject(false));
   startContract.getNavType$.mockReturnValue(new BehaviorSubject('modern' as NavType));

src/core/public/chrome/chrome_service.test.ts

@@ -362,6 +362,27 @@ describe('start', () => {
     });
   });
 
+  describe('custom nav link', () => {
+    it('updates/emits the current custom nav link', async () => {
+      const { chrome, service } = await start();
+      const promise = chrome.getCustomNavLink$().pipe(toArray()).toPromise();
+
+      chrome.setCustomNavLink({ title: 'Manage cloud deployment' });
+      chrome.setCustomNavLink(undefined);
+      service.stop();
+
+      await expect(promise).resolves.toMatchInlineSnapshot(`
+              Array [
+                undefined,
+                Object {
+                  "title": "Manage cloud deployment",
+                },
+                undefined,
+              ]
+            `);
+    });
+  });
+
   describe('help extension', () => {
     it('updates/emits the current help extension', async () => {
       const { chrome, service } = await start();

src/core/public/chrome/chrome_service.tsx

@@ -34,7 +34,7 @@ import { IUiSettingsClient } from '../ui_settings';
 import { KIBANA_ASK_ELASTIC_LINK } from './constants';
 import { ChromeDocTitle, DocTitleService } from './doc_title';
 import { ChromeNavControls, NavControlsService } from './nav_controls';
-import { ChromeNavLinks, NavLinksService } from './nav_links';
+import { ChromeNavLinks, NavLinksService, ChromeNavLink } from './nav_links';
 import { ChromeRecentlyAccessed, RecentlyAccessedService } from './recently_accessed';
 import { Header } from './ui';
 import { NavType } from './ui/header';
@@ -148,6 +148,7 @@ export class ChromeService {
     const helpExtension$ = new BehaviorSubject<ChromeHelpExtension | undefined>(undefined);
     const breadcrumbs$ = new BehaviorSubject<ChromeBreadcrumb[]>([]);
     const badge$ = new BehaviorSubject<ChromeBadge | undefined>(undefined);
+    const customNavLink$ = new BehaviorSubject<ChromeNavLink | undefined>(undefined);
     const helpSupportUrl$ = new BehaviorSubject<string>(KIBANA_ASK_ELASTIC_LINK);
     const isNavDrawerLocked$ = new BehaviorSubject(localStorage.getItem(IS_LOCKED_KEY) === 'true');
 
@@ -221,6 +222,7 @@ export class ChromeService {
           badge$={badge$.pipe(takeUntil(this.stop$))}
           basePath={http.basePath}
           breadcrumbs$={breadcrumbs$.pipe(takeUntil(this.stop$))}
+          customNavLink$={customNavLink$.pipe(takeUntil(this.stop$))}
           kibanaDocLink={docLinks.links.kibana}
           forceAppSwitcherNavigation$={navLinks.getForceAppSwitcherNavigation$()}
           helpExtension$={helpExtension$.pipe(takeUntil(this.stop$))}
@@ -297,6 +299,12 @@ export class ChromeService {
       getIsNavDrawerLocked$: () => getIsNavDrawerLocked$,
 
       getNavType$: () => getNavType$,
+
+      getCustomNavLink$: () => customNavLink$.pipe(takeUntil(this.stop$)),
+
+      setCustomNavLink: (customNavLink?: ChromeNavLink) => {
+        customNavLink$.next(customNavLink);
+      },
     };
   }
 
@@ -423,6 +431,16 @@ export interface ChromeStart {
    */
   setBreadcrumbs(newBreadcrumbs: ChromeBreadcrumb[]): void;
 
+  /**
+   * Get an observable of the current custom nav link
+   */
+  getCustomNavLink$(): Observable<Partial<ChromeNavLink> | undefined>;
+
+  /**
+   * Override the current set of custom nav link
+   */
+  setCustomNavLink(newCustomNavLink?: Partial<ChromeNavLink>): void;
+
   /**
    * Get an observable of the current custom help conttent
    */