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

ash/drag_drop/drag_drop_controller_unittest.cc

Index: ash/drag_drop/drag_drop_controller_unittest.cc
diff --git a/ash/drag_drop/drag_drop_controller_unittest.cc b/ash/drag_drop/drag_drop_controller_unittest.cc
index 6e13a444688b04a57e9f9b94d4ef1e75f5945818..baf5acb758b339a55ab8dada0519483731af036c 100644
--- a/ash/drag_drop/drag_drop_controller_unittest.cc
+++ b/ash/drag_drop/drag_drop_controller_unittest.cc
@@ -287,32 +287,6 @@ void DispatchGesture(ui::EventType gesture_type, gfx::Point location) {
       &gesture_event);
 }
 
-bool IsGestureEventType(ui::EventType type) {
-  switch (type) {
-    case ui::ET_GESTURE_SCROLL_BEGIN:
-    case ui::ET_GESTURE_SCROLL_END:
-    case ui::ET_GESTURE_SCROLL_UPDATE:
-    case ui::ET_GESTURE_TAP:
-    case ui::ET_GESTURE_TAP_CANCEL:
-    case ui::ET_GESTURE_TAP_DOWN:
-    case ui::ET_GESTURE_BEGIN:
-    case ui::ET_GESTURE_END:
-    case ui::ET_GESTURE_TWO_FINGER_TAP:
-    case ui::ET_GESTURE_PINCH_BEGIN:
-    case ui::ET_GESTURE_PINCH_END:
-    case ui::ET_GESTURE_PINCH_UPDATE:
-    case ui::ET_GESTURE_LONG_PRESS:
-    case ui::ET_GESTURE_LONG_TAP:
-    case ui::ET_GESTURE_MULTIFINGER_SWIPE:
-    case ui::ET_SCROLL_FLING_CANCEL:
-    case ui::ET_SCROLL_FLING_START:
-      return true;
-    default:
-      break;
-  }
-  return false;
-}
-
 }  // namespace
 
 class DragDropControllerTest : public AshTestBase {