Fix new/free mismatch in ActiveTabTest.DelegateIsSet

chrome/browser/extensions/active_tab_unittest.cc

Index: chrome/browser/extensions/active_tab_unittest.cc
diff --git a/chrome/browser/extensions/active_tab_unittest.cc b/chrome/browser/extensions/active_tab_unittest.cc
index 77b8e472aaa73a9c83e147b41cf361a513263b07..5b732a5d4b30378277d64d6658e51a87ca608bdf 100644
--- a/chrome/browser/extensions/active_tab_unittest.cc
+++ b/chrome/browser/extensions/active_tab_unittest.cc
@@ -490,9 +490,9 @@ TEST_F(ActiveTabTest, DelegateIsSet) {
 
   // Cleanup.
   chromeos::WallpaperManager::Shutdown();
-  free(ActiveTabPermissionGranter::SetPlatformDelegate(nullptr));
+  delete ActiveTabPermissionGranter::SetPlatformDelegate(nullptr);
 }
-#endif
+#endif  // defined(OS_CHROMEOS)
 
 }  // namespace
 }  // namespace extensions