bluetooth: mac: Reject requestDevice promise if Mac version is <= 10.9

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 61aa3dc7a6abb83efac1f7bcc609e95f122d3e4b..0409648f59ee712735f555149b1585d7eac656dc 100644
--- a/device/bluetooth/bluetooth_adapter_factory.cc
+++ b/device/bluetooth/bluetooth_adapter_factory.cc
@@ -8,6 +8,9 @@
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
+#if defined(OS_MACOSX)

[dcheng, 2016/10/05 08:56:48]

Nit: platform-specific includes guarded by conditions usually go at the end
(https://google.github.io/styleguide/cppguide.html#Names_and_Order_of_Includes)

+#include "base/mac/mac_util.h"
+#endif
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
@@ -63,6 +66,24 @@ bool BluetoothAdapterFactory::IsBluetoothAdapterAvailable() {
 #endif
 }
 
+// static
+bool BluetoothAdapterFactory::IsLowEnergyAvailable() {
+  DCHECK(IsBluetoothAdapterAvailable());
+
+  // SetAdapterForTesting() may be used to provide a test or mock adapter
+  // instance even on platforms that would otherwise not support it.
+  if (default_adapter.Get())
+    return true;
+#if defined(OS_ANDROID) || defined(OS_CHROMEOS) || defined(OS_WIN) || \
+    defined(OS_LINUX)
+  return true;
+#elif defined(OS_MACOSX)
+  return base::mac::IsAtLeastOS10_10();
+#endif  // defined(OS_ANDROID) || defined(OS_CHROMEOS) || defined(OS_WIN) ||
+        // defined(OS_LINUX)
+  return false;
+}
+
 // static
 void BluetoothAdapterFactory::GetAdapter(const AdapterCallback& callback) {
   DCHECK(IsBluetoothAdapterAvailable());