Remove unused chrome APIs (#109204)

* remove unused chrome APIs

* update generated doc

* fix tests

* fix tests bis

docs/development/core/public/kibana-plugin-core-public.chromestart.md

@@ -50,20 +50,14 @@ core.chrome.setHelpExtension(elem => {
 
 |  Method | Description |
 |  --- | --- |
-|  [addApplicationClass(className)](./kibana-plugin-core-public.chromestart.addapplicationclass.md) | Add a className that should be set on the application container. |
-|  [getApplicationClasses$()](./kibana-plugin-core-public.chromestart.getapplicationclasses_.md) | Get the current set of classNames that will be set on the application container. |
 |  [getBadge$()](./kibana-plugin-core-public.chromestart.getbadge_.md) | Get an observable of the current badge |
-|  [getBrand$()](./kibana-plugin-core-public.chromestart.getbrand_.md) | Get an observable of the current brand information. |
 |  [getBreadcrumbs$()](./kibana-plugin-core-public.chromestart.getbreadcrumbs_.md) | Get an observable of the current list of breadcrumbs |
 |  [getBreadcrumbsAppendExtension$()](./kibana-plugin-core-public.chromestart.getbreadcrumbsappendextension_.md) | Get an observable of the current extension appended to breadcrumbs |
 |  [getCustomNavLink$()](./kibana-plugin-core-public.chromestart.getcustomnavlink_.md) | Get an observable of the current custom nav link |
 |  [getHelpExtension$()](./kibana-plugin-core-public.chromestart.gethelpextension_.md) | Get an observable of the current custom help conttent |
 |  [getIsNavDrawerLocked$()](./kibana-plugin-core-public.chromestart.getisnavdrawerlocked_.md) | Get an observable of the current locked state of the nav drawer. |
 |  [getIsVisible$()](./kibana-plugin-core-public.chromestart.getisvisible_.md) | Get an observable of the current visibility state of the chrome. |
-|  [removeApplicationClass(className)](./kibana-plugin-core-public.chromestart.removeapplicationclass.md) | Remove a className added with <code>addApplicationClass()</code>. If className is unknown it is ignored. |
-|  [setAppTitle(appTitle)](./kibana-plugin-core-public.chromestart.setapptitle.md) | Sets the current app's title |
 |  [setBadge(badge)](./kibana-plugin-core-public.chromestart.setbadge.md) | Override the current badge |
-|  [setBrand(brand)](./kibana-plugin-core-public.chromestart.setbrand.md) | Set the brand configuration. |
 |  [setBreadcrumbs(newBreadcrumbs)](./kibana-plugin-core-public.chromestart.setbreadcrumbs.md) | Override the current set of breadcrumbs |
 |  [setBreadcrumbsAppendExtension(breadcrumbsAppendExtension)](./kibana-plugin-core-public.chromestart.setbreadcrumbsappendextension.md) | Mount an element next to the last breadcrumb |
 |  [setCustomNavLink(newCustomNavLink)](./kibana-plugin-core-public.chromestart.setcustomnavlink.md) | Override the current set of custom nav link |

docs/development/core/public/kibana-plugin-core-public.md

@@ -42,7 +42,6 @@ The plugin integrates with the core system via lifecycle events: `setup`<!-- -->
 |  [AsyncPlugin](./kibana-plugin-core-public.asyncplugin.md) | A plugin with asynchronous lifecycle methods. |
 |  [Capabilities](./kibana-plugin-core-public.capabilities.md) | The read-only set of capabilities available for the current UI session. Capabilities are simple key-value pairs of (string, boolean), where the string denotes the capability ID, and the boolean is a flag indicating if the capability is enabled or disabled. |
 |  [ChromeBadge](./kibana-plugin-core-public.chromebadge.md) |  |
-|  [ChromeBrand](./kibana-plugin-core-public.chromebrand.md) |  |
 |  [ChromeDocTitle](./kibana-plugin-core-public.chromedoctitle.md) | APIs for accessing and updating the document title. |
 |  [ChromeHelpExtension](./kibana-plugin-core-public.chromehelpextension.md) |  |
 |  [ChromeHelpExtensionMenuCustomLink](./kibana-plugin-core-public.chromehelpextensionmenucustomlink.md) |  |

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

@@ -9,7 +9,7 @@
 import { BehaviorSubject } from 'rxjs';
 import type { PublicMethodsOf } from '@kbn/utility-types';
 import type { DeeplyMockedKeys } from '@kbn/utility-types/jest';
-import { ChromeBadge, ChromeBrand, ChromeBreadcrumb, ChromeService, InternalChromeStart } from './';
+import { ChromeBadge, ChromeBreadcrumb, ChromeService, InternalChromeStart } from './';
 
 const createStartContractMock = () => {
   const startContract: DeeplyMockedKeys<InternalChromeStart> = {
@@ -40,14 +40,8 @@ const createStartContractMock = () => {
       getCenter$: jest.fn(),
       getRight$: jest.fn(),
     },
-    setAppTitle: jest.fn(),
-    setBrand: jest.fn(),
-    getBrand$: jest.fn(),
     setIsVisible: jest.fn(),
     getIsVisible$: jest.fn(),
-    addApplicationClass: jest.fn(),
-    removeApplicationClass: jest.fn(),
-    getApplicationClasses$: jest.fn(),
     getBadge$: jest.fn(),
     setBadge: jest.fn(),
     getBreadcrumbs$: jest.fn(),
@@ -64,9 +58,7 @@ const createStartContractMock = () => {
     getBodyClasses$: 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$.mockReturnValue(new BehaviorSubject([{} as ChromeBreadcrumb]));
   startContract.getBreadcrumbsAppendExtension$.mockReturnValue(new BehaviorSubject(undefined));