Standardize usage of virtual/override/final specifiers.

content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc

Index: content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
diff --git a/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc b/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
index 5b827281f62f3625d2cddc93a3453cc99942e558..0e9eb4ef65ad67aca1c84a00185e108b9f6b6bfd 100644
--- a/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
+++ b/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
@@ -22,7 +22,7 @@ namespace content {
 class OverscrollNavigationOverlayTest : public RenderViewHostImplTestHarness {
  public:
   OverscrollNavigationOverlayTest() {}
-  virtual ~OverscrollNavigationOverlayTest() {}
+  ~OverscrollNavigationOverlayTest() override {}
 
   gfx::Image CreateDummyScreenshot() {
     SkBitmap bitmap;
@@ -62,7 +62,7 @@ class OverscrollNavigationOverlayTest : public RenderViewHostImplTestHarness {
 
  protected:
   // RenderViewHostImplTestHarness:
-  virtual void SetUp() override {
+  void SetUp() override {
     RenderViewHostImplTestHarness::SetUp();
 
     const GURL first("https://www.google.com");
@@ -103,7 +103,7 @@ class OverscrollNavigationOverlayTest : public RenderViewHostImplTestHarness {
     EXPECT_FALSE(overlay_->received_paint_update_);
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     overlay_.reset();
     RenderViewHostImplTestHarness::TearDown();
   }