Standardize usage of virtual/override/final in net/

net/proxy/proxy_resolver_v8_tracing_unittest.cc

Index: net/proxy/proxy_resolver_v8_tracing_unittest.cc
diff --git a/net/proxy/proxy_resolver_v8_tracing_unittest.cc b/net/proxy/proxy_resolver_v8_tracing_unittest.cc
index a6e38cba408c954ebbe872b175102e7fdbb84ad8..0c16a1a04391c396be0de717183d6b09cf9effef 100644
--- a/net/proxy/proxy_resolver_v8_tracing_unittest.cc
+++ b/net/proxy/proxy_resolver_v8_tracing_unittest.cc
@@ -70,8 +70,7 @@ class MockErrorObserver : public ProxyResolverErrorObserver {
  public:
   MockErrorObserver() : event_(true, false) {}
 
-  virtual void OnPACScriptError(int line_number,
-                                const base::string16& error) override {
+  void OnPACScriptError(int line_number, const base::string16& error) override {
     {
       base::AutoLock l(lock_);
       output += base::StringPrintf("Error: line %d: %s\n", line_number,
@@ -763,12 +762,12 @@ class BlockableHostResolver : public HostResolver {
   BlockableHostResolver()
       : num_cancelled_requests_(0), waiting_for_resolve_(false) {}
 
-  virtual int Resolve(const RequestInfo& info,
-                      RequestPriority priority,
-                      AddressList* addresses,
-                      const CompletionCallback& callback,
-                      RequestHandle* out_req,
-                      const BoundNetLog& net_log) override {
+  int Resolve(const RequestInfo& info,
+              RequestPriority priority,
+              AddressList* addresses,
+              const CompletionCallback& callback,
+              RequestHandle* out_req,
+              const BoundNetLog& net_log) override {
     EXPECT_FALSE(callback.is_null());
     EXPECT_TRUE(out_req);
 
@@ -789,14 +788,14 @@ class BlockableHostResolver : public HostResolver {
     return ERR_IO_PENDING;
   }
 
-  virtual int ResolveFromCache(const RequestInfo& info,
-                               AddressList* addresses,
-                               const BoundNetLog& net_log) override {
+  int ResolveFromCache(const RequestInfo& info,
+                       AddressList* addresses,
+                       const BoundNetLog& net_log) override {
     NOTREACHED();
     return ERR_DNS_CACHE_MISS;
   }
 
-  virtual void CancelRequest(RequestHandle req) override {
+  void CancelRequest(RequestHandle req) override {
     EXPECT_EQ(reinterpret_cast<RequestHandle*>(1), req);
     num_cancelled_requests_++;
   }