Standardize usage of virtual/override/final specifiers.

chrome/test/base/view_event_test_platform_part_ash.cc

Index: chrome/test/base/view_event_test_platform_part_ash.cc
diff --git a/chrome/test/base/view_event_test_platform_part_ash.cc b/chrome/test/base/view_event_test_platform_part_ash.cc
index 070ae36f41b374b5df959a2af0db1b2a2847a2b4..9a91efed0bb5f941e703b24a064d9e96f73e09bc 100644
--- a/chrome/test/base/view_event_test_platform_part_ash.cc
+++ b/chrome/test/base/view_event_test_platform_part_ash.cc
@@ -16,10 +16,10 @@ namespace {
 class ViewEventTestPlatformPartAsh : public ViewEventTestPlatformPart {
  public:
   explicit ViewEventTestPlatformPartAsh(ui::ContextFactory* context_factory);
-  virtual ~ViewEventTestPlatformPartAsh();
+  ~ViewEventTestPlatformPartAsh() override;
 
   // Overridden from ViewEventTestPlatformPart:
-  virtual gfx::NativeWindow GetContext() override {
+  gfx::NativeWindow GetContext() override {
     return NULL;  // No context, so that desktop tree hosts are used by default.
   }