Enable strict-virtual-specifiers for iOS builds.

components/policy/core/common/policy_loader_ios_unittest.mm

Index: components/policy/core/common/policy_loader_ios_unittest.mm
diff --git a/components/policy/core/common/policy_loader_ios_unittest.mm b/components/policy/core/common/policy_loader_ios_unittest.mm
index f2ffcdd5103fdf8a72e25602d7c984c6538d267d..f77893a488f2c2db4eca78b2b0eab817067e1f02 100644
--- a/components/policy/core/common/policy_loader_ios_unittest.mm
+++ b/components/policy/core/common/policy_loader_ios_unittest.mm
@@ -31,25 +31,24 @@ class TestHarness : public PolicyProviderTestHarness {
   // If |use_encoded_key| is true then AddPolicies() serializes and encodes
   // the policies, and publishes them under the EncodedChromePolicy key.
   explicit TestHarness(bool use_encoded_key);
-  virtual ~TestHarness();
+  ~TestHarness() override;
 
-  virtual void SetUp() override;
+  void SetUp() override;
 
-  virtual ConfigurationPolicyProvider* CreateProvider(
+  ConfigurationPolicyProvider* CreateProvider(
       SchemaRegistry* registry,
       scoped_refptr<base::SequencedTaskRunner> task_runner) override;
 
-  virtual void InstallEmptyPolicy() override;
-  virtual void InstallStringPolicy(const std::string& policy_name,
-                                   const std::string& policy_value) override;
-  virtual void InstallIntegerPolicy(const std::string& policy_name,
-                                    int policy_value) override;
-  virtual void InstallBooleanPolicy(const std::string& policy_name,
-                                    bool policy_value) override;
-  virtual void InstallStringListPolicy(
-      const std::string& policy_name,
-      const base::ListValue* policy_value) override;
-  virtual void InstallDictionaryPolicy(
+  void InstallEmptyPolicy() override;
+  void InstallStringPolicy(const std::string& policy_name,
+                           const std::string& policy_value) override;
+  void InstallIntegerPolicy(const std::string& policy_name,
+                            int policy_value) override;
+  void InstallBooleanPolicy(const std::string& policy_name,
+                            bool policy_value) override;
+  void InstallStringListPolicy(const std::string& policy_name,
+                               const base::ListValue* policy_value) override;
+  void InstallDictionaryPolicy(
       const std::string& policy_name,
       const base::DictionaryValue* policy_value) override;