Pulls display related changes from mojo to chrome

mojo/services/view_manager/gesture_manager_delegate.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SERVICES_VIEW_MANAGER_GESTURE_MANAGER_DELEGATE_H_
+#define SERVICES_VIEW_MANAGER_GESTURE_MANAGER_DELEGATE_H_
+
+#include <set>
+
+#include "third_party/mojo_services/src/input_events/public/interfaces/input_events.mojom.h"
+#include "third_party/mojo_services/src/view_manager/public/cpp/types.h"
+
+namespace view_manager {
+
+class GestureManagerDelegate {
+ public:
+  // Informs the delegate of a pointer event. The delegate should asynchronously
+  // respond with the set of gestures appropriate for the view
+  // (GestureManager::SetGestures()).
+  // |has_chosen_gesture| is true if a gesture has been chosen.
+  virtual void ProcessEvent(const ServerView* view,
+                            mojo::EventPtr event,
+                            bool has_chosen_gesture) = 0;
+
+ protected:
+  virtual ~GestureManagerDelegate() {}
+};
+
+}  // namespace view_manager
+
+#endif  // SERVICES_VIEW_MANAGER_GESTURE_MANAGER_DELEGATE_H_