Enable Clang warnings in .cc files for Linux+[Aura/ChromeOS]

device/bluetooth/bluetooth_experimental_chromeos_unittest.cc

Index: device/bluetooth/bluetooth_experimental_chromeos_unittest.cc
diff --git a/device/bluetooth/bluetooth_experimental_chromeos_unittest.cc b/device/bluetooth/bluetooth_experimental_chromeos_unittest.cc
index 1c6f5b629d156d7627f02f710bc697ae5eb7f8f0..afd8325a1ed62c274b9720892f3b49825885136e 100644
--- a/device/bluetooth/bluetooth_experimental_chromeos_unittest.cc
+++ b/device/bluetooth/bluetooth_experimental_chromeos_unittest.cc
@@ -136,51 +136,50 @@ class TestPairingDelegate : public BluetoothDevice::PairingDelegate {
         last_entered_(999U) {}
   virtual ~TestPairingDelegate() {}
 
-  void RequestPinCode(BluetoothDevice* device) OVERRIDE {
+  virtual void RequestPinCode(BluetoothDevice* device) OVERRIDE {
     ++call_count_;
     ++request_pincode_count_;
     QuitMessageLoop();
   }
 
-  void RequestPasskey(BluetoothDevice* device) OVERRIDE {
+  virtual void RequestPasskey(BluetoothDevice* device) OVERRIDE {
     ++call_count_;
     ++request_passkey_count_;
     QuitMessageLoop();
   }
 
-  void DisplayPinCode(BluetoothDevice* device,
-                      const std::string& pincode) OVERRIDE {
+  virtual void DisplayPinCode(BluetoothDevice* device,
+                              const std::string& pincode) OVERRIDE {
     ++call_count_;
     ++display_pincode_count_;
     last_pincode_ = pincode;
     QuitMessageLoop();
   }
 
-  void DisplayPasskey(BluetoothDevice* device,
-                      uint32 passkey) OVERRIDE {
+  virtual void DisplayPasskey(BluetoothDevice* device,
+                              uint32 passkey) OVERRIDE {
     ++call_count_;
     ++display_passkey_count_;
     last_passkey_ = passkey;
     QuitMessageLoop();
   }
 
-  void KeysEntered(BluetoothDevice* device,
-                   uint32 entered) OVERRIDE {
+  virtual void KeysEntered(BluetoothDevice* device, uint32 entered) OVERRIDE {
     ++call_count_;
     ++keys_entered_count_;
     last_entered_ = entered;
     QuitMessageLoop();
   }
 
-  void ConfirmPasskey(BluetoothDevice* device,
-                      uint32 passkey) OVERRIDE {
+  virtual void ConfirmPasskey(BluetoothDevice* device,
+                              uint32 passkey) OVERRIDE {
     ++call_count_;
     ++confirm_passkey_count_;
     last_passkey_ = passkey;
     QuitMessageLoop();
   }
 
-  void DismissDisplayOrConfirm() OVERRIDE {
+  virtual void DismissDisplayOrConfirm() OVERRIDE {
     ++call_count_;
     ++dismiss_count_;
     QuitMessageLoop();