bluetooth: Introduce SetLowEnergyAvailableForTesting

device/bluetooth/bluetooth_adapter_factory.cc

Index: device/bluetooth/bluetooth_adapter_factory.cc
diff --git a/device/bluetooth/bluetooth_adapter_factory.cc b/device/bluetooth/bluetooth_adapter_factory.cc
index ed64ecd2ee670bd91ed4328924455edf5de60f8b..3358c38bdbf4f3356507acba6ea2e24aa8580fb0 100644
--- a/device/bluetooth/bluetooth_adapter_factory.cc
+++ b/device/bluetooth/bluetooth_adapter_factory.cc
@@ -21,6 +21,9 @@ namespace device {
 
 namespace {
 
+static base::LazyInstance<BluetoothAdapterFactory>::Leaky g_singleton =
+    LAZY_INSTANCE_INITIALIZER;
+
 // Shared default adapter instance.  We don't want to keep this class around
 // if nobody is using it, so use a WeakPtr and create the object when needed.
 // Since Google C++ Style (and clang's static analyzer) forbids us having
@@ -53,6 +56,13 @@ void RunAdapterCallbacks() {
 
 }  // namespace
 
+BluetoothAdapterFactory::~BluetoothAdapterFactory() {}
+
+// static
+BluetoothAdapterFactory& BluetoothAdapterFactory::Get() {
+  return g_singleton.Get();
+}
+
 // static
 bool BluetoothAdapterFactory::IsBluetoothAdapterAvailable() {
   // SetAdapterForTesting() may be used to provide a test or mock adapter
@@ -67,8 +77,11 @@ bool BluetoothAdapterFactory::IsBluetoothAdapterAvailable() {
 #endif
 }
 
-// static
 bool BluetoothAdapterFactory::IsLowEnergyAvailable() {
+  if (le_available_for_testing_) {
+    return le_available_for_testing_.value();
+  }
+
   DCHECK(IsBluetoothAdapterAvailable());
 
   // SetAdapterForTesting() may be used to provide a test or mock adapter
@@ -131,4 +144,10 @@ bool BluetoothAdapterFactory::HasSharedInstanceForTesting() {
   return default_adapter.Get() != nullptr;
 }
 
+void BluetoothAdapterFactory::SetLowEnergyAvailableForTesting(bool available) {
+  le_available_for_testing_ = base::make_optional(available);
+}
+
+BluetoothAdapterFactory::BluetoothAdapterFactory() {}
+
 }  // namespace device