remove debugService.findProcessByUUID, there are alternative ways to do this

src/vs/workbench/api/electron-browser/mainThreadDebugService.ts

@@ -37,8 +37,10 @@ export class MainThreadDebugService implements MainThreadDebugServiceShape {
 		}));
 		this._toDispose.push(debugService.onDidCustomEvent(event => {
 			if (event && event.sessionId) {
-				const process = this.debugService.findProcessByUUID(event.sessionId);
-				this._proxy.$acceptDebugSessionCustomEvent(event.sessionId, process.configuration.type, process.configuration.name, event);
+				const process = this.debugService.getModel().getProcesses().filter(p => p.getId() === event.sessionId).pop();
+				if (process) {
+					this._proxy.$acceptDebugSessionCustomEvent(event.sessionId, process.configuration.type, process.configuration.name, event);
+				}
 			}
 		}));
 	}
@@ -82,7 +84,7 @@ export class MainThreadDebugService implements MainThreadDebugServiceShape {
 	}
 
 	public $customDebugAdapterRequest(sessionId: DebugSessionUUID, request: string, args: any): TPromise<any> {
-		const process = this.debugService.findProcessByUUID(sessionId);
+		const process = this.debugService.getModel().getProcesses().filter(p => p.getId() === sessionId).pop();
 		if (process) {
 			return process.session.custom(request, args).then(response => {
 				if (response.success) {

src/vs/workbench/parts/debug/browser/debugContentProvider.ts

@@ -54,7 +54,8 @@ export class DebugContentProvider implements IWorkbenchContribution, ITextModelC
 				if (pair.length === 2) {
 					switch (pair[0]) {
 						case 'session':
-							process = this.debugService.findProcessByUUID(decodeURIComponent(pair[1]));
+							const processId = decodeURIComponent(pair[1]);
+							process = this.debugService.getModel().getProcesses().filter(p => p.getId() === processId).pop();
 							break;
 						case 'ref':
 							sourceRef = parseInt(pair[1]);

src/vs/workbench/parts/debug/common/debug.ts

@@ -591,11 +591,6 @@ export interface IDebugService {
 	 */
 	startDebugging(root: IWorkspaceFolder, configOrName?: IConfig | string, noDebug?: boolean): TPromise<any>;
 
-	/**
-	 * Find process by ID.
-	 */
-	findProcessByUUID(uuid: string): IProcess | null;
-
 	/**
 	 * Restarts a process or creates a new one if there is no active session.
 	 */

src/vs/workbench/parts/debug/electron-browser/debugService.ts

@@ -726,15 +726,6 @@ export class DebugService implements debug.IDebugService {
 		)));
 	}
 
-	public findProcessByUUID(uuid: string): debug.IProcess | null {
-		const processes = this.getModel().getProcesses();
-		const result = processes.filter(process => process.getId() === uuid);
-		if (result.length > 0) {
-			return result[0];	// there can only be one
-		}
-		return null;
-	}
-
 	private createProcess(root: IWorkspaceFolder, config: debug.IConfig, sessionId: string): TPromise<debug.IProcess> {
 		return this.textFileService.saveAll().then(() =>
 			(this.configurationManager.selectedLaunch ? this.configurationManager.selectedLaunch.resolveConfiguration(config) : TPromise.as(config)).then(resolvedConfig => {

src/vs/workbench/parts/debug/test/common/mockDebug.ts

@@ -92,10 +92,6 @@ export class MockDebugService implements debug.IDebugService {
 		return TPromise.as(null);
 	}
 
-	public findProcessByUUID(uuid: string): debug.IProcess | null {
-		return null;
-	}
-
 	public restartProcess(): TPromise<any> {
 		return TPromise.as(null);
 	}