fix(webdriver): emit CDP events (#12058)

packages/puppeteer-core/src/bidi/Frame.ts

@@ -471,6 +471,7 @@ export class BidiFrame extends Frame {
       targetId: this._id,
       flatten: true,
     });
+    await this.browsingContext.subscribe([Bidi.ChromiumBidi.BiDiModule.Cdp]);
     return new BidiCdpSession(this, sessionId);
   }
 

packages/puppeteer-core/src/bidi/core/BrowsingContext.ts

@@ -539,6 +539,14 @@ export class BrowsingContext extends EventEmitter<{
     });
   }
 
+  @throwIfDisposed<BrowsingContext>(context => {
+    // SAFETY: Disposal implies this exists.
+    return context.#reason!;
+  })
+  async subscribe(events: string[]): Promise<void> {
+    await this.#session.subscribe(events, [this.id]);
+  }
+
   [disposeSymbol](): void {
     this.#reason ??=
       'Browsing context already closed, probably because the user context closed.';

packages/puppeteer-core/src/bidi/core/Session.ts

@@ -163,9 +163,10 @@ export class Session
     // SAFETY: By definition of `disposed`, `#reason` is defined.
     return session.#reason!;
   })
-  async subscribe(events: string[]): Promise<void> {
+  async subscribe(events: string[], contexts?: string[]): Promise<void> {
     await this.send('session.subscribe', {
       events,
+      contexts,
     });
   }