Standardize usage of virtual/override/final specifiers.

content/browser/quota/quota_temporary_storage_evictor_unittest.cc

Index: content/browser/quota/quota_temporary_storage_evictor_unittest.cc
diff --git a/content/browser/quota/quota_temporary_storage_evictor_unittest.cc b/content/browser/quota/quota_temporary_storage_evictor_unittest.cc
index 595475847650497185384c6ec56fee7a7a92d11f..6c00c0f877f9d62843998364341918f1e045a4e1 100644
--- a/content/browser/quota/quota_temporary_storage_evictor_unittest.cc
+++ b/content/browser/quota/quota_temporary_storage_evictor_unittest.cc
@@ -141,7 +141,7 @@ class QuotaTemporaryStorageEvictorTest : public testing::Test {
       : num_get_usage_and_quota_for_eviction_(0),
         weak_factory_(this) {}
 
-  virtual void SetUp() {
+  void SetUp() override {
     quota_eviction_handler_.reset(new MockQuotaEvictionHandler(this));
 
     // Run multiple evictions in a single RunUntilIdle() when interval_ms == 0
@@ -149,7 +149,7 @@ class QuotaTemporaryStorageEvictorTest : public testing::Test {
         quota_eviction_handler_.get(), 0));
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     temporary_storage_evictor_.reset();
     quota_eviction_handler_.reset();
     base::RunLoop().RunUntilIdle();