Fix implicit access to raw pointer of scoped_refptr.

device/bluetooth/bluez/bluetooth_advertisement_bluez_unittest.cc

Index: device/bluetooth/bluez/bluetooth_advertisement_bluez_unittest.cc
diff --git a/device/bluetooth/bluez/bluetooth_advertisement_bluez_unittest.cc b/device/bluetooth/bluez/bluetooth_advertisement_bluez_unittest.cc
index 6ecb6f79f45b1ed7ebab00d768c3bddc2850b2a8..71627540c7cb5f4837c60899d85405a0da87920f 100644
--- a/device/bluetooth/bluez/bluetooth_advertisement_bluez_unittest.cc
+++ b/device/bluetooth/bluez/bluetooth_advertisement_bluez_unittest.cc
@@ -200,7 +200,7 @@ class BluetoothAdvertisementBlueZTest : public testing::Test {
 TEST_F(BluetoothAdvertisementBlueZTest, RegisterSucceeded) {
   scoped_refptr<BluetoothAdvertisement> advertisement = CreateAdvertisement();
   ExpectSuccess();
-  EXPECT_NE(nullptr, advertisement);
+  EXPECT_TRUE(advertisement);
 
   UnregisterAdvertisement(advertisement);
   ExpectSuccess();
@@ -209,18 +209,18 @@ TEST_F(BluetoothAdvertisementBlueZTest, RegisterSucceeded) {
 TEST_F(BluetoothAdvertisementBlueZTest, DoubleRegisterFailed) {
   scoped_refptr<BluetoothAdvertisement> advertisement = CreateAdvertisement();
   ExpectSuccess();
-  EXPECT_NE(nullptr, advertisement);
+  EXPECT_TRUE(advertisement);
 
   // Creating a second advertisement should give us an error.
   scoped_refptr<BluetoothAdvertisement> advertisement2 = CreateAdvertisement();
   ExpectError(BluetoothAdvertisement::ERROR_ADVERTISEMENT_ALREADY_EXISTS);
-  EXPECT_EQ(nullptr, advertisement2);
+  EXPECT_FALSE(advertisement2);
 }
 
 TEST_F(BluetoothAdvertisementBlueZTest, DoubleUnregisterFailed) {
   scoped_refptr<BluetoothAdvertisement> advertisement = CreateAdvertisement();
   ExpectSuccess();
-  EXPECT_NE(nullptr, advertisement);
+  EXPECT_TRUE(advertisement);
 
   UnregisterAdvertisement(advertisement);
   ExpectSuccess();
@@ -234,7 +234,7 @@ TEST_F(BluetoothAdvertisementBlueZTest, DoubleUnregisterFailed) {
 TEST_F(BluetoothAdvertisementBlueZTest, UnregisterAfterReleasedFailed) {
   scoped_refptr<BluetoothAdvertisement> advertisement = CreateAdvertisement();
   ExpectSuccess();
-  EXPECT_NE(nullptr, advertisement);
+  EXPECT_TRUE(advertisement);
 
   observer_.reset(new TestAdvertisementObserver(advertisement));
   TriggerReleased(advertisement);