AppShell support for Mac.

extensions/shell/browser/shell_browsertest.cc

Index: extensions/shell/browser/shell_browsertest.cc
diff --git a/extensions/shell/browser/shell_browsertest.cc b/extensions/shell/browser/shell_browsertest.cc
index 407e417f0de1cdc1424662a1453e16b8f8e7df51..5e1a86984ea4ac4e04780311c41f10ca443c762f 100644
--- a/extensions/shell/browser/shell_browsertest.cc
+++ b/extensions/shell/browser/shell_browsertest.cc
@@ -10,7 +10,10 @@
 #include "extensions/browser/app_window/app_window_registry.h"
 #include "extensions/browser/notification_types.h"
 #include "extensions/shell/test/shell_apitest.h"
+
+#if defined(USE_AURA)
 #include "ui/aura/window.h"
+#endif
 
 namespace extensions {
 
@@ -23,8 +26,10 @@ IN_PROC_BROWSER_TEST_F(ShellApiTest, Basic) {
       AppWindowRegistry::Get(browser_context())->app_windows().front();
   ASSERT_TRUE(app_window);
 
+#if defined(USE_AURA)
   // The web contents have focus.
   EXPECT_TRUE(app_window->web_contents()->GetContentNativeView()->HasFocus());
+#endif
 }
 
 }  // namespace extensions