Fixes for -Wunused-function on Linux, Android and ChromeOS

ash/display/mouse_cursor_event_filter_unittest.cc

Index: ash/display/mouse_cursor_event_filter_unittest.cc
diff --git a/ash/display/mouse_cursor_event_filter_unittest.cc b/ash/display/mouse_cursor_event_filter_unittest.cc
index 294cbf1fca153d1f16e9eabeaf3f22fe054eb6bd..7fa79fd6f3bf97e9064138f124791071b4c3c03a 100644
--- a/ash/display/mouse_cursor_event_filter_unittest.cc
+++ b/ash/display/mouse_cursor_event_filter_unittest.cc
@@ -16,19 +16,6 @@
 
 namespace ash {
 namespace internal {
-namespace {
-
-gfx::Display GetPrimaryDisplay() {
-  return Shell::GetScreen()->GetDisplayNearestWindow(
-      Shell::GetAllRootWindows()[0]);
-}
-
-gfx::Display GetSecondaryDisplay() {
-  return Shell::GetScreen()->GetDisplayNearestWindow(
-      Shell::GetAllRootWindows()[1]);
-}
-
-}  // namespace
 
 class MouseCursorEventFilterTest : public test::AshTestBase {
  public: