ash::internal::TrayBluetooth: Hide spinner if discovery session stops.

chrome/browser/ui/ash/system_tray_delegate_chromeos.cc

Index: chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
diff --git a/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc b/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
index d3fc1aa252dc5d45f6f695694bc45e7bebb0a04f..aeb2ad8f95f126a71327b90302d33af1c06592f6 100644
--- a/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
+++ b/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
@@ -697,8 +697,7 @@ void SystemTrayDelegateChromeOS::GetAvailableBluetoothDevices(
 }
 
 void SystemTrayDelegateChromeOS::BluetoothStartDiscovering() {
-  if (bluetooth_discovery_session_.get() &&
-      bluetooth_discovery_session_->IsActive()) {
+  if (GetBluetoothDiscovering()) {
     LOG(WARNING) << "Already have active Bluetooth device discovery session.";
     return;
   }
@@ -712,8 +711,7 @@ void SystemTrayDelegateChromeOS::BluetoothStartDiscovering() {
 
 void SystemTrayDelegateChromeOS::BluetoothStopDiscovering() {
   should_run_bluetooth_discovery_ = false;
-  if (!bluetooth_discovery_session_.get() ||
-      !bluetooth_discovery_session_->IsActive()) {
+  if (!GetBluetoothDiscovering()) {
     LOG(WARNING) << "No active Bluetooth device discovery session.";
     return;
   }
@@ -869,6 +867,11 @@ bool SystemTrayDelegateChromeOS::GetBluetoothEnabled() {
   return bluetooth_adapter_->IsPowered();
 }
 
+bool SystemTrayDelegateChromeOS::GetBluetoothDiscovering() {
+  return (bluetooth_discovery_session_.get() &&
+      bluetooth_discovery_session_->IsActive());
+}
+
 void SystemTrayDelegateChromeOS::ChangeProxySettings() {
   CHECK(GetUserLoginStatus() == ash::user::LOGGED_IN_NONE);
   LoginDisplayHostImpl::default_host()->OpenProxySettings();
@@ -1348,6 +1351,7 @@ void SystemTrayDelegateChromeOS::OnStartBluetoothDiscoverySession(
     return;
   VLOG(1) << "Claiming new Bluetooth device discovery session.";
   bluetooth_discovery_session_ = discovery_session.Pass();
+  GetSystemTrayNotifier()->NotifyBluetoothDiscoveringChanged();
 }
 
 void SystemTrayDelegateChromeOS::UpdateEnterpriseDomain() {