Standardize usage of virtual/override/final in media/

media/blink/webmediaplayer_impl.cc

Index: media/blink/webmediaplayer_impl.cc
diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
index 24538c116409b6ecf70b9d079f1f24edc4cccad5..a4e829dfaebd345bcc6e29d165746100ff5f496e 100644
--- a/media/blink/webmediaplayer_impl.cc
+++ b/media/blink/webmediaplayer_impl.cc
@@ -93,11 +93,11 @@ class SyncPointClientImpl : public media::VideoFrame::SyncPointClient {
   explicit SyncPointClientImpl(
       blink::WebGraphicsContext3D* web_graphics_context)
       : web_graphics_context_(web_graphics_context) {}
-  virtual ~SyncPointClientImpl() {}
-  virtual uint32 InsertSyncPoint() override {
+  ~SyncPointClientImpl() override {}
+  uint32 InsertSyncPoint() override {
     return web_graphics_context_->insertSyncPoint();
   }
-  virtual void WaitSyncPoint(uint32 sync_point) override {
+  void WaitSyncPoint(uint32 sync_point) override {
     web_graphics_context_->waitSyncPoint(sync_point);
   }