Standardize usage of virtual/override/final in chrome/browser/extensions/

chrome/browser/extensions/process_management_browsertest.cc

Index: chrome/browser/extensions/process_management_browsertest.cc
diff --git a/chrome/browser/extensions/process_management_browsertest.cc b/chrome/browser/extensions/process_management_browsertest.cc
index 87d6d3ee6e3e03e60e34b7fa0ffca3a5ed469ed4..416ff86ff0cb9e25837c29c2d23252bc87186425 100644
--- a/chrome/browser/extensions/process_management_browsertest.cc
+++ b/chrome/browser/extensions/process_management_browsertest.cc
@@ -30,7 +30,7 @@ namespace {
 class ProcessManagementTest : public ExtensionBrowserTest {
  private:
   // This is needed for testing isolated apps, which are still experimental.
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(CommandLine* command_line) override {
     ExtensionBrowserTest::SetUpCommandLine(command_line);
     command_line->AppendSwitch(
         extensions::switches::kEnableExperimentalExtensionApis);