make browser_tests and interaction_ui_tests compile and link under use_aura=1 chromeos=0.

chrome/test/base/ui_test_utils_linux.cc

Index: chrome/test/base/ui_test_utils_linux.cc
diff --git a/chrome/test/base/ui_test_utils_linux.cc b/chrome/test/base/ui_test_utils_linux.cc
index f890d7db82f11692fa49bb0d599ab86d980f6797..b07f4fd3b452f281fb4748ef799baa0d38563248 100644
--- a/chrome/test/base/ui_test_utils_linux.cc
+++ b/chrome/test/base/ui_test_utils_linux.cc
@@ -4,7 +4,9 @@
 
 #include "chrome/test/base/ui_test_utils.h"
 
+#if !defined(USE_AURA)
 #include <gtk/gtk.h>
+#endif
 
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ -19,7 +21,7 @@
 
 namespace ui_test_utils {
 
-#if !defined(TOOLKIT_VIEWS)
+#if !defined(TOOLKIT_VIEWS) && !defined(USE_AURA)
 namespace {
 
 // Check if the focused widget for |root| is |target| or a child of |target|.
@@ -84,14 +86,22 @@ void ClickOnView(const Browser* browser, ViewID vid) {
 }
 
 void HideNativeWindow(gfx::NativeWindow window) {
+#if !defined(USE_AURA)
   gtk_widget_hide(GTK_WIDGET(window));
+#else
+  NOTIMPLEMENTED();
+#endif
 }
 
 void ShowAndFocusNativeWindow(gfx::NativeWindow window) {
+#if !defined(USE_AURA)
   if (gtk_window_has_toplevel_focus(GTK_WINDOW(window)))
     return;
 
   gtk_window_present(GTK_WINDOW(window));
+#else
+  NOTIMPLEMENTED();
+#endif
 }
 
 }  // namespace ui_test_utils