Standardize usage of virtual/override/final in content/browser/

content/browser/appcache/appcache_service_impl.cc

Index: content/browser/appcache/appcache_service_impl.cc
diff --git a/content/browser/appcache/appcache_service_impl.cc b/content/browser/appcache/appcache_service_impl.cc
index 97a05586816e4016a1138f0e04f6a3945ecb712d..0c784dfd3dcc5572e36825f9d0880d1357c04ae2 100644
--- a/content/browser/appcache/appcache_service_impl.cc
+++ b/content/browser/appcache/appcache_service_impl.cc
@@ -51,7 +51,7 @@ class AppCacheServiceImpl::AsyncHelper
     service_->pending_helpers_.insert(this);
   }
 
-  virtual ~AsyncHelper() {
+  ~AsyncHelper() override {
     if (service_)
       service_->pending_helpers_.erase(this);
   }
@@ -94,7 +94,7 @@ class AppCacheServiceImpl::CanHandleOfflineHelper : AsyncHelper {
         first_party_(first_party) {
   }
 
-  virtual void Start() override {
+  void Start() override {
     AppCachePolicy* policy = service_->appcache_policy();
     if (policy && !policy->CanLoadAppCache(url_, first_party_)) {
       CallCallback(net::ERR_FAILED);
@@ -107,10 +107,13 @@ class AppCacheServiceImpl::CanHandleOfflineHelper : AsyncHelper {
 
  private:
   // AppCacheStorage::Delegate implementation.
-  virtual void OnMainResponseFound(
-      const GURL& url, const AppCacheEntry& entry,
-      const GURL& fallback_url, const AppCacheEntry& fallback_entry,
-      int64 cache_id, int64 group_id, const GURL& mainfest_url) override;
+  void OnMainResponseFound(const GURL& url,
+                           const AppCacheEntry& entry,
+                           const GURL& fallback_url,
+                           const AppCacheEntry& fallback_entry,
+                           int64 cache_id,
+                           int64 group_id,
+                           const GURL& mainfest_url) override;
 
   GURL url_;
   GURL first_party_;
@@ -137,17 +140,16 @@ class AppCacheServiceImpl::DeleteHelper : public AsyncHelper {
       : AsyncHelper(service, callback), manifest_url_(manifest_url) {
   }
 
-  virtual void Start() override {
+  void Start() override {
     service_->storage()->LoadOrCreateGroup(manifest_url_, this);
   }
 
  private:
   // AppCacheStorage::Delegate implementation.
-  virtual void OnGroupLoaded(
-      AppCacheGroup* group, const GURL& manifest_url) override;
-  virtual void OnGroupMadeObsolete(AppCacheGroup* group,
-                                   bool success,
-                                   int response_code) override;
+  void OnGroupLoaded(AppCacheGroup* group, const GURL& manifest_url) override;
+  void OnGroupMadeObsolete(AppCacheGroup* group,
+                           bool success,
+                           int response_code) override;
 
   GURL manifest_url_;
   DISALLOW_COPY_AND_ASSIGN(DeleteHelper);
@@ -184,19 +186,18 @@ class AppCacheServiceImpl::DeleteOriginHelper : public AsyncHelper {
         num_caches_to_delete_(0), successes_(0), failures_(0) {
   }
 
-  virtual void Start() override {
+  void Start() override {
     // We start by listing all caches, continues in OnAllInfo().
     service_->storage()->GetAllInfo(this);
   }
 
  private:
   // AppCacheStorage::Delegate implementation.
-  virtual void OnAllInfo(AppCacheInfoCollection* collection) override;
-  virtual void OnGroupLoaded(
-      AppCacheGroup* group, const GURL& manifest_url) override;
-  virtual void OnGroupMadeObsolete(AppCacheGroup* group,
-                                   bool success,
-                                   int response_code) override;
+  void OnAllInfo(AppCacheInfoCollection* collection) override;
+  void OnGroupLoaded(AppCacheGroup* group, const GURL& manifest_url) override;
+  void OnGroupMadeObsolete(AppCacheGroup* group,
+                           bool success,
+                           int response_code) override;
 
   void CacheCompleted(bool success);
 
@@ -278,13 +279,11 @@ class AppCacheServiceImpl::GetInfoHelper : AsyncHelper {
       : AsyncHelper(service, callback), collection_(collection) {
   }
 
-  virtual void Start() override {
-    service_->storage()->GetAllInfo(this);
-  }
+  void Start() override { service_->storage()->GetAllInfo(this); }
 
  private:
   // AppCacheStorage::Delegate implementation.
-  virtual void OnAllInfo(AppCacheInfoCollection* collection) override;
+  void OnAllInfo(AppCacheInfoCollection* collection) override;
 
   scoped_refptr<AppCacheInfoCollection> collection_;
 
@@ -316,11 +315,11 @@ class AppCacheServiceImpl::CheckResponseHelper : AsyncHelper {
         amount_data_read_(0) {
   }
 
-  virtual void Start() override {
+  void Start() override {
     service_->storage()->LoadOrCreateGroup(manifest_url_, this);
   }
 
-  virtual void Cancel() override {
+  void Cancel() override {
     AppCacheHistograms::CountCheckResponseResult(
         AppCacheHistograms::CHECK_CANCELED);
     response_reader_.reset();
@@ -328,8 +327,7 @@ class AppCacheServiceImpl::CheckResponseHelper : AsyncHelper {
   }
 
  private:
-  virtual void OnGroupLoaded(AppCacheGroup* group,
-                             const GURL& manifest_url) override;
+  void OnGroupLoaded(AppCacheGroup* group, const GURL& manifest_url) override;
   void OnReadInfoComplete(int result);
   void OnReadDataComplete(int result);