native_viewport support for ozone

mojo/services/ozone_drm_gpu/public/interfaces/ozone_drm_gpu.mojom

+// Copyright 2014 The Chromium Authors. All rights reserved.

[jamesr, 2015/08/25 00:30:28]

nit: 2015

[cdotstout, 2015/08/27 19:10:21]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+module mojo;
+
+import "geometry/public/interfaces/geometry.mojom";
+
+struct DisplayMode {
+  Size size;
+  bool is_interlaced;
+  float refresh_rate;
+};
+
+struct DisplaySnapshot {

[jamesr, 2015/08/25 00:30:28]

how many of these fields do we need today?

[cdotstout, 2015/08/27 19:10:21]

Removed unused fields.

+  int64 display_id;
+  Point origin;
+  Size physical_size;
+  int32 type;
+  bool is_aspect_preserving_scaling;
+  bool has_overscan;
+  string display_name;
+  array<DisplayMode> modes;
+  bool has_current_mode;

[jamesr, 2015/08/25 00:30:28]

mixing up bools and other types will not pack well as the mojom serialization
preserves order.  if you put all the bools next to each other they'll pack into
a bitfield

[cdotstout, 2015/08/27 19:10:21]

Done.

+  DisplayMode current_mode;
+  bool has_native_mode;
+  DisplayMode native_mode;
+  int64 product_id;
+  string string_representation;
+};
+
+interface OzoneDrmGpu {
+  AddGraphicsDevice(string file_path, int32 file_descriptor);
+  CreateWindow(int64 widget);
+  WindowBoundsChanged(int64 widget, Rect bounds);
+
+  RefreshNativeDisplays();
+  ConfigureNativeDisplay(int64 id, DisplayMode mode, Point originhost);
+};