Block incognito browser windows for voice interaction.

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 c7e3323137bc482d1f8348524f54e9ab2cbd1391..66d0e7901272392d50ba7b5911a81b62d8eff93e 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
@@ -14,6 +14,14 @@
 #include "mojo/public/cpp/bindings/binding.h"
 #include "ui/base/accelerators/accelerator.h"
 
+namespace gfx {
+class Image;
+}  // gfx
+
+namespace ui {
+class LayerTreeOwner;
+}  // namespace ui
+
 namespace arc {
 
 // This provides voice interaction context (currently screenshots)
@@ -45,6 +53,9 @@ class ArcVoiceInteractionFrameworkService
   void OnMetalayerClosed() override;
   void SetMetalayerEnabled(bool enabled) override;
 
+  void EncodeAndReturnImage(const CaptureFullscreenCallback& callback,
+                            const gfx::Image& image);
+
   bool IsMetalayerSupported();
   void ShowMetalayer(const base::Closure& closed);
   void HideMetalayer();
@@ -58,6 +69,7 @@ class ArcVoiceInteractionFrameworkService
   mojo::Binding<mojom::VoiceInteractionFrameworkHost> binding_;
   base::Closure metalayer_closed_callback_;
   bool metalayer_enabled_ = false;
+  std::unique_ptr<ui::LayerTreeOwner> old_layer_owner_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcVoiceInteractionFrameworkService);
 };