Standardize usage of virtual/override/final specifiers.

content/browser/geolocation/wifi_data_provider_linux.cc

Index: content/browser/geolocation/wifi_data_provider_linux.cc
diff --git a/content/browser/geolocation/wifi_data_provider_linux.cc b/content/browser/geolocation/wifi_data_provider_linux.cc
index ccda2994a23914115e59a005fbabbd2001c3c2c7..1909abfe141b76a903325f4131abafe81df395f7 100644
--- a/content/browser/geolocation/wifi_data_provider_linux.cc
+++ b/content/browser/geolocation/wifi_data_provider_linux.cc
@@ -40,7 +40,7 @@ enum { NM_DEVICE_TYPE_WIFI = 2 };
 class NetworkManagerWlanApi : public WifiDataProviderCommon::WlanApiInterface {
  public:
   NetworkManagerWlanApi();
-  virtual ~NetworkManagerWlanApi();
+  ~NetworkManagerWlanApi() override;
 
   // Must be called before any other interface method. Will return false if the
   // NetworkManager session cannot be created (e.g. not present on this distro),
@@ -54,7 +54,7 @@ class NetworkManagerWlanApi : public WifiDataProviderCommon::WlanApiInterface {
   //
   // This function makes blocking D-Bus calls, but it's totally fine as
   // the code runs in "Geolocation" thread, not the browser's UI thread.
-  virtual bool GetAccessPointData(WifiData::AccessPointDataSet* data) override;
+  bool GetAccessPointData(WifiData::AccessPointDataSet* data) override;
 
  private:
   // Enumerates the list of available network adapter devices known to