fix: crashed events deprecation (#40090)

lib/browser/api/app.ts

@@ -114,5 +114,11 @@ for (const name of events) {
 }
 
 // Deprecation.
-deprecate.event(app, 'gpu-process-crashed', 'child-process-gone');
-deprecate.event(app, 'renderer-process-crashed', 'render-process-gone');
+deprecate.event(app, 'gpu-process-crashed', 'child-process-gone', () => {
+  // the old event is still emitted by App::OnGpuProcessCrashed()
+  return undefined;
+});
+
+deprecate.event(app, 'renderer-process-crashed', 'render-process-gone', (event: Electron.Event, webContents: Electron.WebContents, details: Electron.RenderProcessGoneDetails) => {
+  return [event, webContents, details.reason === 'killed'];
+});

lib/browser/api/web-contents.ts

@@ -665,8 +665,8 @@ WebContents.prototype._init = function () {
     ipcMain.emit(channel, event, message);
   });
 
-  this.on('crashed', (event, ...args) => {
-    app.emit('renderer-process-crashed', event, this, ...args);
+  deprecate.event(this, 'crashed', 'render-process-gone', (event: Electron.Event, details: Electron.RenderProcessGoneDetails) => {
+    return [event, details.reason === 'killed'];
   });
 
   this.on('render-process-gone', (event, details) => {

lib/common/deprecate.ts

@@ -66,14 +66,17 @@ export function renameFunction<T extends Function> (fn: T, newName: string): T {
 }
 
 // change the name of an event
-export function event (emitter: NodeJS.EventEmitter, oldName: string, newName: string) {
+export function event (emitter: NodeJS.EventEmitter, oldName: string, newName: string, transformer: (...args: any[]) => any[] | undefined = (...args) => args) {
   const warn = newName.startsWith('-') /* internal event */
     ? warnOnce(`${oldName} event`)
     : warnOnce(`${oldName} event`, `${newName} event`);
   return emitter.on(newName, function (this: NodeJS.EventEmitter, ...args) {
     if (this.listenerCount(oldName) !== 0) {
       warn();
-      this.emit(oldName, ...args);
+      const transformedArgs = transformer(...args);
+      if (transformedArgs) {
+        this.emit(oldName, ...transformedArgs);
+      }
     }
   });
 }

shell/browser/api/electron_api_web_contents.cc

@@ -1729,13 +1729,6 @@ void WebContents::RenderViewDeleted(content::RenderViewHost* render_view_host) {
 
 void WebContents::PrimaryMainFrameRenderProcessGone(
     base::TerminationStatus status) {
-  auto weak_this = GetWeakPtr();
-  Emit("crashed", status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED);
-
-  // User might destroy WebContents in the crashed event.
-  if (!weak_this || !web_contents())
-    return;
-
   v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
   v8::HandleScope handle_scope(isolate);
   gin_helper::Dictionary details = gin_helper::Dictionary::CreateEmpty(isolate);