Add VoiceInteractionFrameworkHost::SetMetalayerEnabled

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

Index: chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.h
diff --git a/chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.h b/chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.h
index 71583e3adbd3f036ded997f7bccfa997ab3b54f2..acf4600734bcec8d24c1dd48c2d88634c42b3185 100644
--- a/chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.h
+++ b/chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_framework_service.h
@@ -43,6 +43,7 @@ class ArcVoiceInteractionFrameworkService
       const CaptureFocusedWindowCallback& callback) override;
   void CaptureFullscreen(const CaptureFullscreenCallback& callback) override;
   void OnMetalayerClosed() override;
+  void SetMetalayerEnabled(bool enabled) override;
 
   bool IsMetalayerSupported();
   void ShowMetalayer(const base::Closure& closed);
@@ -59,6 +60,7 @@ class ArcVoiceInteractionFrameworkService
 
   mojo::Binding<mojom::VoiceInteractionFrameworkHost> binding_;
   base::Closure metalayer_closed_callback_;
+  bool metalayer_enabled_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(ArcVoiceInteractionFrameworkService);
 };