chore(chromium): remove obsolete target related code (#1417)

src/chromium/crBrowser.ts

@@ -83,7 +83,6 @@ export class CRBrowser extends platform.EventEmitter implements Browser {
     });
     this._session.on('Target.targetCreated', this._targetCreated.bind(this));
     this._session.on('Target.targetDestroyed', this._targetDestroyed.bind(this));
-    this._session.on('Target.targetInfoChanged', this._targetInfoChanged.bind(this));
     this._session.on('Target.attachedToTarget', this._onAttachedToTarget.bind(this));
     this._firstPagePromise = new Promise(f => this._firstPageCallback = f);
   }
@@ -163,13 +162,6 @@ export class CRBrowser extends platform.EventEmitter implements Browser {
     target._didClose();
   }
 
-  _targetInfoChanged(event: Protocol.Target.targetInfoChangedPayload) {
-    const target = this._targets.get(event.targetInfo.targetId)!;
-    if (!target)
-      return;
-    target._targetInfoChanged(event.targetInfo);
-  }
-
   async _closePage(page: Page) {
     await this._session.send('Target.closeTarget', { targetId: CRTarget.fromPage(page)._targetId });
   }
@@ -267,7 +259,7 @@ export class CRBrowserContext extends BrowserContextBase {
   }
 
   pages(): Page[] {
-    return this._targets().filter(target => target.type() === 'page').map(target => target._initializedPage()).filter(pageOrNull => !!pageOrNull) as Page[];
+    return this._targets().filter(target => target.type() === 'page').map(target => target._initializedPage).filter(pageOrNull => !!pageOrNull) as Page[];
   }
 
   async newPage(): Promise<Page> {
@@ -401,7 +393,7 @@ export class CRBrowserContext extends BrowserContextBase {
   }
 
   backgroundPages(): Page[] {
-    return this._targets().filter(target => target.type() === 'background_page').map(target => target._initializedPage()).filter(pageOrNull => !!pageOrNull) as Page[];
+    return this._targets().filter(target => target.type() === 'background_page').map(target => target._initializedPage).filter(pageOrNull => !!pageOrNull) as Page[];
   }
 
   async newCDPSession(page: Page): Promise<CRSession> {

src/chromium/crPage.ts

@@ -42,17 +42,16 @@ import { CRTarget } from './crTarget';
 const UTILITY_WORLD_NAME = '__playwright_utility_world__';
 
 export class CRPage implements PageDelegate {
-  _client: CRSession;
-  _initialized = false;
+  readonly _client: CRSession;
   private readonly _page: Page;
   readonly _networkManager: CRNetworkManager;
-  private _contextIdToContext = new Map<number, dom.FrameExecutionContext>();
+  private readonly _contextIdToContext = new Map<number, dom.FrameExecutionContext>();
   private _eventListeners: RegisteredListener[] = [];
-  rawMouse: RawMouseImpl;
-  rawKeyboard: RawKeyboardImpl;
-  private _browser: CRBrowser;
-  private _pdf: CRPDF;
-  private _coverage: CRCoverage;
+  readonly rawMouse: RawMouseImpl;
+  readonly rawKeyboard: RawKeyboardImpl;
+  private readonly _browser: CRBrowser;
+  private readonly _pdf: CRPDF;
+  private readonly _coverage: CRCoverage;
   private readonly _browserContext: CRBrowserContext;
 
   constructor(client: CRSession, browser: CRBrowser, browserContext: CRBrowserContext) {
@@ -144,7 +143,6 @@ export class CRPage implements PageDelegate {
       promises.push(this.evaluateOnNewDocument(source));
     promises.push(this._client.send('Runtime.runIfWaitingForDebugger'));
     await Promise.all(promises);
-    this._initialized = true;
   }
 
   didClose() {

src/chromium/crTarget.ts

@@ -26,14 +26,14 @@ import { CRExecutionContext } from './crExecutionContext';
 const targetSymbol = Symbol('target');
 
 export class CRTarget {
-  private _targetInfo: Protocol.Target.TargetInfo;
+  private readonly _targetInfo: Protocol.Target.TargetInfo;
   private readonly _browser: CRBrowser;
   private readonly _browserContext: CRBrowserContext;
   readonly _targetId: string;
   readonly sessionFactory: () => Promise<CRSession>;
-  private _pagePromiseCallback: ((pageOrError: Page | Error) => void) | null = null;
-  private _pagePromise: Promise<Page | Error> | null = null;
-  _crPage: CRPage | null = null;
+  private readonly _pagePromise: Promise<Page | Error> | null = null;
+  readonly _crPage: CRPage | null = null;
+  _initializedPage: Page | null = null;
   private _workerPromise: Promise<Worker> | null = null;
 
   static fromPage(page: Page): CRTarget {
@@ -61,7 +61,7 @@ export class CRTarget {
       const page = this._crPage.page();
       (page as any)[targetSymbol] = this;
       session.once(CRSessionEvents.Disconnected, () => page._didDisconnect());
-      this._pagePromise = this._crPage.initialize().then(() => page).catch(e => e);
+      this._pagePromise = this._crPage.initialize().then(() => this._initializedPage = page).catch(e => e);
     }
   }
 
@@ -70,12 +70,6 @@ export class CRTarget {
       this._crPage.didClose();
   }
 
-  _initializedPage(): Page | null {
-    if (this._crPage && this._crPage._initialized)
-      return this._crPage.page();
-    return null;
-  }
-
   async pageOrError(): Promise<Page | Error> {
     if (CRTarget.isPageType(this.type()))
       return this._pagePromise!;
@@ -100,10 +94,6 @@ export class CRTarget {
     return this._workerPromise;
   }
 
-  url(): string {
-    return this._targetInfo.url;
-  }
-
   type(): 'page' | 'background_page' | 'service_worker' | 'shared_worker' | 'other' | 'browser' {
     const type = this._targetInfo.type;
     if (type === 'page' || type === 'background_page' || type === 'service_worker' || type === 'shared_worker' || type === 'browser')
@@ -121,8 +111,4 @@ export class CRTarget {
       return null;
     return this._browser._targets.get(openerId)!;
   }
-
-  _targetInfoChanged(targetInfo: Protocol.Target.TargetInfo) {
-    this._targetInfo = targetInfo;
-  }
 }