native_viewport support for ozone

services/native_viewport/ozone/display_manager.h

Index: services/native_viewport/ozone/display_manager.h
diff --git a/services/native_viewport/ozone/display_manager.h b/services/native_viewport/ozone/display_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..d25b840cd104dc74597851ce320a8d15a59b41e8
--- /dev/null
+++ b/services/native_viewport/ozone/display_manager.h
@@ -0,0 +1,48 @@
+// 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_NATIVE_VIEWPORT_DISPLAY_MANAGER_H_
+#define SERVICES_NATIVE_VIEWPORT_DISPLAY_MANAGER_H_
+
+#include <vector>
+#include "base/memory/weak_ptr.h"
+#include "ui/display/types/native_display_delegate.h"
+#include "ui/display/types/native_display_observer.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace native_viewport {
+
+class DisplayManager : public ui::NativeDisplayObserver {
+ public:
+  DisplayManager();
+  ~DisplayManager() override;
+
+ private:
+  void OnDisplaysAcquired(const std::vector<ui::DisplaySnapshot*>& displays);
+  void OnDisplayConfigured(const gfx::Rect& bounds, bool success);
+
+  // ui::NativeDisplayObserver
+  void OnConfigurationChanged() override;
+
+  scoped_ptr<ui::NativeDisplayDelegate> delegate_;
+
+  // Flags used to keep track of the current state of display configuration.
+  //
+  // True if configuring the displays. In this case a new display configuration
+  // isn't started.
+  bool is_configuring_;
+
+  // If |is_configuring_| is true and another display configuration event
+  // happens, the event is deferred. This is set to true and a display
+  // configuration will be scheduled after the current one finishes.
+  bool should_configure_;
+
+  base::WeakPtrFactory<DisplayManager> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(DisplayManager);
+};
+
+}  // namespace native_viewport
+
+#endif