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

content/renderer/gpu/queue_message_swap_promise_unittest.cc

Index: content/renderer/gpu/queue_message_swap_promise_unittest.cc
diff --git a/content/renderer/gpu/queue_message_swap_promise_unittest.cc b/content/renderer/gpu/queue_message_swap_promise_unittest.cc
index 562f41c974adf00a467b2b3185da9a5564ed3d32..f8886421d035ab9575066e1c844e8cd4d7d4add8 100644
--- a/content/renderer/gpu/queue_message_swap_promise_unittest.cc
+++ b/content/renderer/gpu/queue_message_swap_promise_unittest.cc
@@ -24,7 +24,7 @@ class TestRenderWidget : public RenderWidget {
   using RenderWidget::QueueMessageImpl;
 
  private:
-  virtual ~TestRenderWidget() {}
+  ~TestRenderWidget() override {}
 
   DISALLOW_COPY_AND_ASSIGN(TestRenderWidget);
 };
@@ -33,7 +33,7 @@ class TestSyncMessageFilter : public IPC::SyncMessageFilter {
  public:
   TestSyncMessageFilter() : IPC::SyncMessageFilter(NULL) {}
 
-  virtual bool Send(IPC::Message* message) override {
+  bool Send(IPC::Message* message) override {
     messages_.push_back(message);
     return true;
   }
@@ -41,7 +41,7 @@ class TestSyncMessageFilter : public IPC::SyncMessageFilter {
   ScopedVector<IPC::Message>& messages() { return messages_; }
 
  private:
-  virtual ~TestSyncMessageFilter() {}
+  ~TestSyncMessageFilter() override {}
 
   ScopedVector<IPC::Message> messages_;