bluetooth: Make public BluetoothDevice::GetName method.

extensions/browser/api/bluetooth/bluetooth_apitest.cc

Index: extensions/browser/api/bluetooth/bluetooth_apitest.cc
diff --git a/extensions/browser/api/bluetooth/bluetooth_apitest.cc b/extensions/browser/api/bluetooth/bluetooth_apitest.cc
index 43ffddb48447589d416dac435b502690171be6e6..ffe204d95f91efa20e87999664fabbaa7a2c8fe8 100644
--- a/extensions/browser/api/bluetooth/bluetooth_apitest.cc
+++ b/extensions/browser/api/bluetooth/bluetooth_apitest.cc
@@ -155,8 +155,9 @@ IN_PROC_BROWSER_TEST_F(BluetoothApiTest, DeviceEvents) {
   event_router()->DeviceAdded(mock_adapter_, device1_.get());
   event_router()->DeviceAdded(mock_adapter_, device2_.get());
 
-  EXPECT_CALL(*device2_, GetDeviceName())
-      .WillRepeatedly(testing::Return("the real d2"));
+  EXPECT_CALL(*device2_, GetName())
+      .WillRepeatedly(
+          testing::Return(base::Optional<std::string>("the real d2")));
   EXPECT_CALL(*device2_, GetNameForDisplay())
       .WillRepeatedly(testing::Return(base::UTF8ToUTF16("the real d2")));
   event_router()->DeviceChanged(mock_adapter_, device2_.get());
@@ -412,8 +413,9 @@ IN_PROC_BROWSER_TEST_F(BluetoothApiTest, DeviceInfo) {
 
   EXPECT_CALL(*device1_, GetAddress())
       .WillRepeatedly(testing::Return("A4:17:31:00:00:00"));
-  EXPECT_CALL(*device1_, GetDeviceName())
-      .WillRepeatedly(testing::Return("Chromebook Pixel"));
+  EXPECT_CALL(*device1_, GetName())
+      .WillRepeatedly(
+          testing::Return(base::Optional<std::string>("Chromebook Pixel")));
   EXPECT_CALL(*device1_, GetNameForDisplay())
       .WillRepeatedly(testing::Return(base::UTF8ToUTF16("Chromebook Pixel")));
   EXPECT_CALL(*device1_, GetBluetoothClass())