Update {virtual,override,final} to follow C++11 style.

content/renderer/media/android/webmediaplayer_android.cc

Index: content/renderer/media/android/webmediaplayer_android.cc
diff --git a/content/renderer/media/android/webmediaplayer_android.cc b/content/renderer/media/android/webmediaplayer_android.cc
index f685b225db85b78db0d1789cf9efc26f18daa7fa..e0b77067760f2aefdefe6b363bd2c2c381d258ac 100644
--- a/content/renderer/media/android/webmediaplayer_android.cc
+++ b/content/renderer/media/android/webmediaplayer_android.cc
@@ -125,11 +125,11 @@ 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);
   }