Allow panels to be created as detached panels.

chrome/browser/extensions/window_open_apitest.cc

Index: chrome/browser/extensions/window_open_apitest.cc
diff --git a/chrome/browser/extensions/window_open_apitest.cc b/chrome/browser/extensions/window_open_apitest.cc
index 7e29c725f6a07b4cce502f5f78a1af7fd0955088..a84cbe98b77b90067051d01c49ec219c9041dfd6 100644
--- a/chrome/browser/extensions/window_open_apitest.cc
+++ b/chrome/browser/extensions/window_open_apitest.cc
@@ -213,6 +213,19 @@ IN_PROC_BROWSER_TEST_F(WindowOpenPanelTest, MAYBE_WindowOpenPanel) {
   ASSERT_TRUE(RunExtensionTest("window_open/panel")) << message_;
 }
 
+#if defined(USE_ASH)
+// On Ash, this currently fails because we're currently opening new panel
+// windows as popup windows instead.
+#define MAYBE_WindowOpenPanelDetached FAILS_WindowOpenPanelDetached
+#else
+#define MAYBE_WindowOpenPanelDetached WindowOpenPanelDetached
+#endif
+IN_PROC_BROWSER_TEST_F(WindowOpenPanelTest, MAYBE_WindowOpenPanelDetached) {
+  if (!PanelManager::UseBrowserlessPanels())
+    return;
+  ASSERT_TRUE(RunExtensionTest("window_open/panel_detached")) << message_;
+}
+
 #if defined(OS_MACOSX) || defined(OS_WIN)
 // Focus test fails if there is no window manager on Linux.
 IN_PROC_BROWSER_TEST_F(WindowOpenPanelTest, WindowOpenFocus) {