bluetooth: BluetoothAdapterDeleter used to control BluetoothAdapter destruction.

device/bluetooth/bluetooth_adapter_chromeos.cc

Index: device/bluetooth/bluetooth_adapter_chromeos.cc
diff --git a/device/bluetooth/bluetooth_adapter_chromeos.cc b/device/bluetooth/bluetooth_adapter_chromeos.cc
index 68fb9ab36299ded74ac7988b78de7822034efefd..e69c479a77fe63c0a96faa5085b1efd95935c11e 100644
--- a/device/bluetooth/bluetooth_adapter_chromeos.cc
+++ b/device/bluetooth/bluetooth_adapter_chromeos.cc
@@ -7,6 +7,7 @@
 #include <string>
 
 #include "base/bind.h"
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/sequenced_task_runner.h"
@@ -110,6 +111,12 @@ BluetoothAdapterChromeOS::~BluetoothAdapterChromeOS() {
           base::Bind(&OnUnregisterAgentError));
 }
 
+void BluetoothAdapterChromeOS::DeleteOnCorrectThread() const {
+  if (ui_task_runner_->RunsTasksOnCurrentThread() ||
+      !ui_task_runner_->DeleteSoon(FROM_HERE, this))
+    delete this;
+}
+
 void BluetoothAdapterChromeOS::AddObserver(
     BluetoothAdapter::Observer* observer) {
   DCHECK(observer);