Add Mojo NativeDisplayDelegate / NativeDisplayObserver.

ui/display/manager/forwarding_display_delegate.h

Index: ui/display/manager/forwarding_display_delegate.h
diff --git a/ui/display/manager/forwarding_display_delegate.h b/ui/display/manager/forwarding_display_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..4e548754d7c72e15d80c7f3aee1e8d0ea59a63ae
--- /dev/null
+++ b/ui/display/manager/forwarding_display_delegate.h
@@ -0,0 +1,91 @@
+// Copyright 2017 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 UI_DISPLAY_MANAGER_FORWARDING_DISPLAY_DELEGATE_H_
+#define UI_DISPLAY_MANAGER_FORWARDING_DISPLAY_DELEGATE_H_
+
+#include <memory>
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "base/observer_list.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "ui/display/manager/display_manager_export.h"
+#include "ui/display/mojo/native_display_delegate.mojom.h"
+#include "ui/display/types/native_display_delegate.h"
+#include "ui/display/types/native_display_observer.h"
+
+namespace display {
+
+class DisplaySnapshotMojo;
+
+// NativeDisplayDelegate implementation that forwards calls to a real
+// NativeDisplayDelegate in another process. Only forwards the methods
+// implemented by Ozone DRM, other method won't do anything.
+class DISPLAY_MANAGER_EXPORT ForwardingDisplayDelegate
+    : public NativeDisplayDelegate,
+      public NON_EXPORTED_BASE(mojom::NativeDisplayObserver) {
+ public:
+  explicit ForwardingDisplayDelegate(mojom::NativeDisplayDelegatePtr delegate);
+  ~ForwardingDisplayDelegate() override;
+
+  // display::NativeDisplayDelegate:
+  void Initialize() override;
+  void GrabServer() override;
+  void UngrabServer() override;
+  void TakeDisplayControl(const DisplayControlCallback& callback) override;
+  void RelinquishDisplayControl(
+      const DisplayControlCallback& callback) override;
+  void SyncWithServer() override;
+  void SetBackgroundColor(uint32_t color_argb) override;
+  void ForceDPMSOn() override;
+  void GetDisplays(const GetDisplaysCallback& callback) override;
+  void AddMode(const DisplaySnapshot& output, const DisplayMode* mode) override;
+  void Configure(const DisplaySnapshot& output,
+                 const DisplayMode* mode,
+                 const gfx::Point& origin,
+                 const ConfigureCallback& callback) override;
+  void CreateFrameBuffer(const gfx::Size& size) override;
+  void GetHDCPState(const DisplaySnapshot& output,
+                    const GetHDCPStateCallback& callback) override;
+  void SetHDCPState(const DisplaySnapshot& output,
+                    HDCPState state,
+                    const SetHDCPStateCallback& callback) override;
+  std::vector<ColorCalibrationProfile> GetAvailableColorCalibrationProfiles(
+      const DisplaySnapshot& output) override;
+  bool SetColorCalibrationProfile(const DisplaySnapshot& output,
+                                  ColorCalibrationProfile new_profile) override;
+  bool SetColorCorrection(const DisplaySnapshot& output,
+                          const std::vector<GammaRampRGBEntry>& degamma_lut,
+                          const std::vector<GammaRampRGBEntry>& gamma_lut,
+                          const std::vector<float>& correction_matrix) override;
+  void AddObserver(display::NativeDisplayObserver* observer) override;
+  void RemoveObserver(display::NativeDisplayObserver* observer) override;
+  FakeDisplayController* GetFakeDisplayController() override;
+
+  // display::mojom::NativeDisplayObserver:
+  void OnConfigurationChanged() override;
+
+ private:
+  // Stores display snapshots and forards them to |callback|.
+  void StoreAndForwardDisplays(
+      const GetDisplaysCallback& callback,
+      std::vector<std::unique_ptr<DisplaySnapshotMojo>> snapshots);
+
+  mojom::NativeDisplayDelegatePtr delegate_;
+  mojo::Binding<mojom::NativeDisplayObserver> binding_;
+
+  // Display snapshots are owned here but accessed via raw pointers elsewhere.
+  // Call OnDisplaySnapshotsInvalidated() on observers before invalidating them.
+  std::vector<std::unique_ptr<DisplaySnapshotMojo>> snapshots_;
+
+  base::ObserverList<display::NativeDisplayObserver> observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(ForwardingDisplayDelegate);
+};
+
+}  // namespace display
+
+#endif  // UI_DISPLAY_MANAGER_FORWARDING_DISPLAY_DELEGATE_H_