Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/profiles/profile_destroyer_unittest.cc

Index: chrome/browser/profiles/profile_destroyer_unittest.cc
diff --git a/chrome/browser/profiles/profile_destroyer_unittest.cc b/chrome/browser/profiles/profile_destroyer_unittest.cc
index d40104177775d03531e580ac7e449fefbd83e457..8ffcab227247152cfdb3d0a0e0800fbd58d46f1a 100644
--- a/chrome/browser/profiles/profile_destroyer_unittest.cc
+++ b/chrome/browser/profiles/profile_destroyer_unittest.cc
@@ -21,7 +21,7 @@ class TestingOffTheRecordDestructionProfile : public TestingProfile {
         destroyed_otr_profile_(false) {
     set_incognito(true);
   }
-  virtual void DestroyOffTheRecordProfile() override {
+  void DestroyOffTheRecordProfile() override {
     destroyed_otr_profile_ = true;
   }
   bool destroyed_otr_profile_;
@@ -35,11 +35,11 @@ class TestingOriginalDestructionProfile : public TestingProfile {
     DCHECK_EQ(kNull, living_instance_);
     living_instance_ = this;
   }
-  virtual ~TestingOriginalDestructionProfile() {
+  ~TestingOriginalDestructionProfile() override {
     DCHECK_EQ(this, living_instance_);
     living_instance_ = NULL;
   }
-  virtual void DestroyOffTheRecordProfile() override {
+  void DestroyOffTheRecordProfile() override {
     SetOffTheRecordProfile(NULL);
     destroyed_otr_profile_ = true;
   }
@@ -62,7 +62,7 @@ class ProfileDestroyerTest : public BrowserWithTestWindowTest {
   ProfileDestroyerTest() : off_the_record_profile_(NULL) {}
 
  protected:
-  virtual TestingProfile* CreateProfile() override {
+  TestingProfile* CreateProfile() override {
     if (off_the_record_profile_ == NULL)
       off_the_record_profile_ = new TestingOffTheRecordDestructionProfile();
     return off_the_record_profile_;