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

chrome/browser/diagnostics/sqlite_diagnostics.cc

Index: chrome/browser/diagnostics/sqlite_diagnostics.cc
diff --git a/chrome/browser/diagnostics/sqlite_diagnostics.cc b/chrome/browser/diagnostics/sqlite_diagnostics.cc
index 0c38718e418b4b23292758e6f881ddb017ca883a..3f98caac42fa3816e50db6b49b08ca5730a7f18d 100644
--- a/chrome/browser/diagnostics/sqlite_diagnostics.cc
+++ b/chrome/browser/diagnostics/sqlite_diagnostics.cc
@@ -44,7 +44,7 @@ class SqliteIntegrityTest : public DiagnosticsTest {
                       const base::FilePath& db_path)
       : DiagnosticsTest(id), flags_(flags), db_path_(db_path) {}
 
-  virtual bool RecoveryImpl(DiagnosticsModel::Observer* observer) override {
+  bool RecoveryImpl(DiagnosticsModel::Observer* observer) override {
     int outcome_code = GetOutcomeCode();
     if (flags_ & REMOVE_IF_CORRUPT) {
       switch (outcome_code) {
@@ -69,7 +69,7 @@ class SqliteIntegrityTest : public DiagnosticsTest {
     return true;
   }
 
-  virtual bool ExecuteImpl(DiagnosticsModel::Observer* observer) override {
+  bool ExecuteImpl(DiagnosticsModel::Observer* observer) override {
     // If we're given an absolute path, use it. If not, then assume it's under
     // the profile directory.
     base::FilePath path;