Standardize usage of virtual/override/final specifiers.

remoting/host/pairing_registry_delegate_linux_unittest.cc

Index: remoting/host/pairing_registry_delegate_linux_unittest.cc
diff --git a/remoting/host/pairing_registry_delegate_linux_unittest.cc b/remoting/host/pairing_registry_delegate_linux_unittest.cc
index 5b7f4ab14650606b9d9f2171bdfa957170b8b29c..c1c3b37185e6e4d5bda293be0042e3183ec4e816 100644
--- a/remoting/host/pairing_registry_delegate_linux_unittest.cc
+++ b/remoting/host/pairing_registry_delegate_linux_unittest.cc
@@ -15,7 +15,7 @@ using protocol::PairingRegistry;
 
 class PairingRegistryDelegateLinuxTest : public testing::Test {
  public:
-  virtual void SetUp() override {
+  void SetUp() override {
     // Create a temporary directory in order to get a unique name and use a
     // subdirectory to ensure that PairingRegistryDelegateLinux::Save() creates
     // the parent directory if it doesn't exist.
@@ -23,9 +23,7 @@ class PairingRegistryDelegateLinuxTest : public testing::Test {
     temp_registry_ = temp_dir_.Append("paired-clients");
   }
 
-  virtual void TearDown() override {
-    base::DeleteFile(temp_dir_, true);
-  }
+  void TearDown() override { base::DeleteFile(temp_dir_, true); }
 
  protected:
   base::FilePath temp_dir_;