Add MetalayerMode to the palette.

chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.h

 // 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 CHROME_BROWSER_CHROMEOS_ARC_VOICE_INTERACTION_ARC_VOICE_INTERACTION_FRAMEWORK_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_VOICE_INTERACTION_ARC_VOICE_INTERACTION_FRAMEWORK_SERVICE_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 24 matching lines @@
   void OnInstanceClosed() override;
 
   // ui::AcceleratorTarget overrides.
   bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
   bool CanHandleAccelerators() const override;
 
   // mojom::VoiceInteractionFrameworkHost overrides.
   void CaptureFocusedWindow(
       const CaptureFocusedWindowCallback& callback) override;
   void CaptureFullscreen(const CaptureFullscreenCallback& callback) override;
+  void OnMetalayerComplete() override;
+
+  bool HasMetalayer();

[Luis Héctor Chávez, 2017/04/20 16:03:26]

maybe IsMetalayerSupported?

[Vladislav Kaznacheev, 2017/04/20 17:54:55]

Renamed here and in PaletteDelegate for consistency

+  void ShowMetalayer(const base::Closure& done);
+  void HideMetalayer();
 
   // Whether enable-voice-interaction switch is present.
   static bool IsVoiceInteractionEnabled();
 
+  // For supporting ArcServiceManager::GetService<T>().
+  static const char kArcServiceName[];
+
  private:
+  void SetMetalayerVisibility(bool visible);
+
   mojo::Binding<mojom::VoiceInteractionFrameworkHost> binding_;
+  base::Closure metalayer_closed_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcVoiceInteractionFrameworkService);
 };
 
 }  // namespace arc
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_VOICE_INTERACTION_ARC_VOICE_INTERACTION_FRAMEWORK_SERVICE_H_