register voice interaction preference.

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 79658292a479fbac6a4bf9ab1aab49ae1d326f0a..53825f06c457a34d2f4abfa43ba7c0820caed4c6 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
@@ -9,6 +9,7 @@
 
 #include "base/macros.h"
 #include "base/time/time.h"
+#include "chrome/browser/chromeos/arc/arc_session_manager.h"
 #include "components/arc/arc_service.h"
 #include "components/arc/common/voice_interaction_framework.mojom.h"
 #include "components/arc/instance_holder.h"
@@ -30,8 +31,8 @@ class ArcVoiceInteractionFrameworkService
       public mojom::VoiceInteractionFrameworkHost,
       public ui::AcceleratorTarget,
       public ui::EventHandler,
-      public InstanceHolder<
-          mojom::VoiceInteractionFrameworkInstance>::Observer {
+      public InstanceHolder<mojom::VoiceInteractionFrameworkInstance>::Observer,
+      public ArcSessionManager::Observer {
  public:
   explicit ArcVoiceInteractionFrameworkService(
       ArcBridgeService* bridge_service);
@@ -60,6 +61,9 @@ class ArcVoiceInteractionFrameworkService
   void ShowMetalayer(const base::Closure& closed);
   void HideMetalayer();
 
+  // ArcSessionManager::Observer overrides.
+  void OnArcPlayStoreEnabledChanged(bool enabled) override;
+
   // Starts a voice interaction session after user-initiated interaction.
   // Records a timestamp and sets number of allowed requests to 2 since by
   // design, there will be one request for screenshot and the other for
@@ -86,6 +90,10 @@ class ArcVoiceInteractionFrameworkService
   // Start the voice interaction setup wizard in container.
   void StartVoiceInteractionSetupWizard();
 
+  // Update voice interaction flags. These flags are set only once when Arc

[Luis Héctor Chávez, 2017/07/10 16:53:02]

nit: s/Arc container/ARC/

[Muyuan, 2017/07/14 20:52:14]

Done.

+  // container is enabled.
+  void UpdateVoiceInteractionPrefs();
+
   // For supporting ArcServiceManager::GetService<T>().
   static const char kArcServiceName[];