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

content/browser/webui/web_ui_data_source_impl.cc

Index: content/browser/webui/web_ui_data_source_impl.cc
diff --git a/content/browser/webui/web_ui_data_source_impl.cc b/content/browser/webui/web_ui_data_source_impl.cc
index 1ab38d1b85b3a94fb8f338dd517198e6fa0c0b48..6fbe577b4d75951413ac657c71e68e2cb62b2f57 100644
--- a/content/browser/webui/web_ui_data_source_impl.cc
+++ b/content/browser/webui/web_ui_data_source_impl.cc
@@ -59,17 +59,14 @@ class WebUIDataSourceImpl::InternalDataSource : public URLDataSource {
   InternalDataSource(WebUIDataSourceImpl* parent) : parent_(parent) {
   }
 
-  virtual ~InternalDataSource() {
-  }
+  ~InternalDataSource() override {}
 
   // URLDataSource implementation.
-  virtual std::string GetSource() const override {
-    return parent_->GetSource();
-  }
-  virtual std::string GetMimeType(const std::string& path) const override {
+  std::string GetSource() const override { return parent_->GetSource(); }
+  std::string GetMimeType(const std::string& path) const override {
     return parent_->GetMimeType(path);
   }
-  virtual void StartDataRequest(
+  void StartDataRequest(
       const std::string& path,
       int render_process_id,
       int render_frame_id,
@@ -77,26 +74,24 @@ class WebUIDataSourceImpl::InternalDataSource : public URLDataSource {
     return parent_->StartDataRequest(path, render_process_id, render_frame_id,
                                      callback);
   }
-  virtual bool ShouldReplaceExistingSource() const override {
+  bool ShouldReplaceExistingSource() const override {
     return parent_->replace_existing_source_;
   }
-  virtual bool AllowCaching() const override {
-    return false;
-  }
-  virtual bool ShouldAddContentSecurityPolicy() const override {
+  bool AllowCaching() const override { return false; }
+  bool ShouldAddContentSecurityPolicy() const override {
     return parent_->add_csp_;
   }
-  virtual std::string GetContentSecurityPolicyObjectSrc() const override {
+  std::string GetContentSecurityPolicyObjectSrc() const override {
     if (parent_->object_src_set_)
       return parent_->object_src_;
     return URLDataSource::GetContentSecurityPolicyObjectSrc();
   }
-  virtual std::string GetContentSecurityPolicyFrameSrc() const override {
+  std::string GetContentSecurityPolicyFrameSrc() const override {
     if (parent_->frame_src_set_)
       return parent_->frame_src_;
     return URLDataSource::GetContentSecurityPolicyFrameSrc();
   }
-  virtual bool ShouldDenyXFrameOptions() const override {
+  bool ShouldDenyXFrameOptions() const override {
     return parent_->deny_xframe_options_;
   }