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 5fee2d0ba31f32b3434629101537f1700ccce5a6..7628cd2c990134e6858b66160e377417039db3f4 100644
--- a/chrome/browser/extensions/window_open_apitest.cc
+++ b/chrome/browser/extensions/window_open_apitest.cc
@@ -207,6 +207,19 @@ 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) {