@@ -206,7 +206,13 @@ class BrowserTabInstance {
   }
 
   Future<void> close() async {
-    await tab.wipConnection.target.closeTarget(tab.wipTab.id);
+    // In Headless Chrome, we get Inspector.detached when we close the last
+    // target rather than a response.
+    await Future.any(<Future<Object>>[
+      tab.wipConnection.onNotification
+          .firstWhere((n) => n.method == 'Inspector.detached'),
+      tab.wipConnection.target.closeTarget(tab.wipTab.id),
+    ]);
   }
 
   void _handleBrowserMessage(Map<dynamic, dynamic> message) {
 
@@ -13,6 +13,10 @@ import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart'
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart'
     as wip show ChromeTab;
 
+// Change this if you want to be able to see Chrome opening while tests run
+// to aid debugging.
+const _useChromeHeadless = true;
+
 class Chrome {
   factory Chrome.from(String executable) {
     return FileSystemEntity.isFileSync(executable)
@@ -66,6 +70,13 @@ class Chrome {
       '--user-data-dir=${getCreateChromeDataDir()}',
       '--remote-debugging-port=$debugPort'
     ];
+    if (_useChromeHeadless) {
+      args.addAll(<String>[
+        '--headless',
+        '--disable-gpu',
+        '--no-sandbox',
+      ]);
+    }
     if (url != null) {
       args.add(url);
     }
@@ -207,7 +218,7 @@ class ChromeTab {
   }
 
   Future<String> createNewTarget() {
-    return _wip.target.createTarget('');
+    return _wip.target.createTarget('about:blank');
   }
 
   bool get isConnected => _wip != null;
Original file line number	Diff line number	Diff line change
`@@ -206,7 +206,13 @@ class BrowserTabInstance {`
`206`	`206`	`}`
`207`	`207`
`208`	`208`	`Future<void> close() async {`
`209`		`- await tab.wipConnection.target.closeTarget(tab.wipTab.id);`
	`209`	`+ // In Headless Chrome, we get Inspector.detached when we close the last`
	`210`	`+ // target rather than a response.`
	`211`	`+ await Future.any(<Future<Object>>[`
	`212`	`+ tab.wipConnection.onNotification`
	`213`	`+ .firstWhere((n) => n.method == 'Inspector.detached'),`
	`214`	`+ tab.wipConnection.target.closeTarget(tab.wipTab.id),`
	`215`	`+ ]);`
`210`	`216`	`}`
`211`	`217`
`212`	`218`	`void _handleBrowserMessage(Map<dynamic, dynamic> message) {`