EDK: Sprinkle some more |final| secret sauce.

mojo/edk/util/command_line.h

Index: mojo/edk/util/command_line.h
diff --git a/mojo/edk/util/command_line.h b/mojo/edk/util/command_line.h
index 4f989b0b51d264cfc12e1f3392a6e3449e417ba6..3db716d6d41417cf55b8b003c0367cb042ca8894 100644
--- a/mojo/edk/util/command_line.h
+++ b/mojo/edk/util/command_line.h
@@ -52,7 +52,7 @@ namespace util {
 // Class that stores processed command lines ("argv[0]", options, and positional
 // arguments) and provides access to them. For more details, see the file-level
 // comment above. This class is thread-safe.
-class CommandLine {
+class CommandLine final {
  private:
   class ConstructionHelper;
 
@@ -139,7 +139,7 @@ namespace internal {
 
 // Helper class for building command lines (finding options, etc.) from raw
 // arguments.
-class CommandLineBuilder {
+class CommandLineBuilder final {
  public:
   CommandLineBuilder();
   ~CommandLineBuilder();