Introduce cros_display_config.mojom

This includes the implementation in ash, but no clients
(dependent CL will follow).

Bug: 682402
Change-Id: I9fe82f915f2b2ddacc29c27f039a47bc8b8a043b
Reviewed-on: https://chromium-review.googlesource.com/1011563
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Reviewed-by: Malay Keshav <malaykeshav@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#554187}

ash/BUILD.gn

@@ -124,6 +124,8 @@ component("ash") {
     "disconnected_app_handler.h",
     "display/ash_display_controller.cc",
     "display/ash_display_controller.h",
+    "display/cros_display_config.cc",
+    "display/cros_display_config.h",
     "display/cursor_window_controller.cc",
     "display/cursor_window_controller.h",
     "display/display_animator.cc",
@@ -1518,6 +1520,7 @@ test("ash_unittests") {
     "detachable_base/detachable_base_handler_unittest.cc",
     "detachable_base/detachable_base_notification_controller_unittest.cc",
     "dip_unittest.cc",
+    "display/cros_display_config_unittest.cc",
     "display/cursor_window_controller_unittest.cc",
     "display/display_color_manager_unittest.cc",
     "display/display_configuration_controller_unittest.cc",

ash/display/cros_display_config.h

@@ -0,0 +1,73 @@
+// Copyright 2018 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 ASH_DISPLAY_CROS_DISPLAY_CONFIG_H_
+#define ASH_DISPLAY_CROS_DISPLAY_CONFIG_H_
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include "ash/ash_export.h"
+#include "ash/public/interfaces/cros_display_config.mojom.h"
+#include "base/macros.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "mojo/public/cpp/bindings/interface_ptr_set.h"
+
+namespace ash {
+
+class OverscanCalibrator;
+class TouchCalibratorController;
+
+// ASH_EXPORT for use in chrome unit_tests for DisplayInfoProviderChromeOS.
+class ASH_EXPORT CrosDisplayConfig : public mojom::CrosDisplayConfigController {
+ public:
+  CrosDisplayConfig();
+  ~CrosDisplayConfig() override;
+
+  void BindRequest(mojom::CrosDisplayConfigControllerRequest request);
+
+  // mojom::CrosDisplayConfigController:
+  void AddObserver(
+      mojom::CrosDisplayConfigObserverAssociatedPtrInfo observer) override;
+  void GetDisplayLayoutInfo(GetDisplayLayoutInfoCallback callback) override;
+  void SetDisplayLayoutInfo(mojom::DisplayLayoutInfoPtr info,
+                            SetDisplayLayoutInfoCallback callback) override;
+  void GetDisplayUnitInfoList(bool single_unified,
+                              GetDisplayUnitInfoListCallback callback) override;
+  void SetDisplayProperties(const std::string& id,
+                            mojom::DisplayConfigPropertiesPtr properties,
+                            SetDisplayPropertiesCallback callback) override;
+  void SetUnifiedDesktopEnabled(bool enabled) override;
+  void OverscanCalibration(const std::string& display_id,
+                           mojom::DisplayConfigOperation op,
+                           const base::Optional<gfx::Insets>& delta,
+                           OverscanCalibrationCallback callback) override;
+  void TouchCalibration(const std::string& display_id,
+                        mojom::DisplayConfigOperation op,
+                        mojom::TouchCalibrationPtr calibration,
+                        TouchCalibrationCallback callback) override;
+
+  TouchCalibratorController* touch_calibrator_for_test() {
+    return touch_calibrator_.get();
+  }
+
+ private:
+  class DisplayObserver;
+  void NotifyObserversDisplayConfigChanged();
+  OverscanCalibrator* GetOverscanCalibrator(const std::string& id);
+
+  std::unique_ptr<DisplayObserver> display_observer_;
+  mojo::BindingSet<mojom::CrosDisplayConfigController> bindings_;
+  mojo::AssociatedInterfacePtrSet<mojom::CrosDisplayConfigObserver> observers_;
+  std::map<std::string, std::unique_ptr<OverscanCalibrator>>
+      overscan_calibrators_;
+  std::unique_ptr<TouchCalibratorController> touch_calibrator_;
+
+  DISALLOW_COPY_AND_ASSIGN(CrosDisplayConfig);
+};
+
+}  // namespace ash
+
+#endif  // ASH_DISPLAY_CROS_DISPLAY_CONFIG_H_