Implement HasInputDevices in CrasAudioManager

chromeos/audio/cras_audio_handler.h

Index: chromeos/audio/cras_audio_handler.h
diff --git a/chromeos/audio/cras_audio_handler.h b/chromeos/audio/cras_audio_handler.h
index 633e30a33a7a2d5d9b4729f747479f23c668b79c..0a65f0739f74ad2a8c60a2fe2e82cb934d3f6317 100644
--- a/chromeos/audio/cras_audio_handler.h
+++ b/chromeos/audio/cras_audio_handler.h
@@ -17,6 +17,7 @@
 #include "chromeos/dbus/cras_audio_client.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "chromeos/dbus/volume_state.h"
+#include "media/audio/audio_manager.h"
 
 class PrefRegistrySimple;
 class PrefService;
@@ -281,6 +282,9 @@ class CHROMEOS_EXPORT CrasAudioHandler : public CrasAudioClient::Observer,
   void HandleGetNodesError(const std::string& error_name,
                            const std::string& error_msg);
 
+  // Sets HasInputDevice in CrasAudioManager.
+  void UpdateAudioManagerHasInputDevices();
+
   // Adds an active node.
   // If there is no active node, |node_id| will be switched to become the
   // primary active node. Otherwise, it will be added as an additional active