Add sourceInfo when installing from welcomePage or cli

src/vs/code/node/cliProcessMain.ts

@@ -110,7 +110,7 @@ class Main {
 						return TPromise.as(null);
 					}
 
-					return this.extensionGalleryService.query({ names: [id] })
+					return this.extensionGalleryService.query({ names: [id], source: 'cli' })
 						.then<IPager<IGalleryExtension>>(null, err => {
 							if (err.responseText) {
 								try {

src/vs/workbench/parts/welcome/page/electron-browser/welcomePage.ts

@@ -365,7 +365,7 @@ class WelcomePage {
 				this.messageService.show(Severity.Info, strings.alreadyInstalled.replace('{0}', extensionSuggestion.name));
 				return;
 			}
-			const foundAndInstalled = installedExtension ? TPromise.as(true) : this.extensionGalleryService.query({ names: [extensionSuggestion.id] })
+			const foundAndInstalled = installedExtension ? TPromise.as(true) : this.extensionGalleryService.query({ names: [extensionSuggestion.id], source: telemetryFrom })
 				.then(result => {
 					const [extension] = result.firstPage;
 					if (!extension) {