Introduce --print-all-code flag and infrastructure for one flag to imply another flag.

src/v8.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 39 matching lines @@
 bool V8::has_been_setup_ = false;
 bool V8::has_been_disposed_ = false;
 bool V8::has_fatal_error_ = false;
 bool V8::use_crankshaft_ = true;
 
 static Mutex* entropy_mutex = OS::CreateMutex();
 static EntropySource entropy_source;
 
 
 bool V8::Initialize(Deserializer* des) {
-  // Setting --harmony implies all other harmony flags.
-  // TODO(rossberg): Is there a better place to put this?
-  if (FLAG_harmony) {
-    FLAG_harmony_typeof = true;
-    FLAG_harmony_scoping = true;
-    FLAG_harmony_proxies = true;
-    FLAG_harmony_collections = true;
-  }
+  FlagList::EnforceFlagImplications();
 
   InitializeOncePerProcess();
 
   // The current thread may not yet had entered an isolate to run.
   // Note the Isolate::Current() may be non-null because for various
   // initialization purposes an initializing thread may be assigned an isolate
   // but not actually enter it.
   if (i::Isolate::CurrentPerIsolateThreadData() == NULL) {
     i::Isolate::EnterDefaultIsolate();
   }
@@ skipping 151 matching lines @@
   ElementsAccessor::InitializeOncePerProcess();
 
   if (FLAG_stress_compaction) {
     FLAG_force_marking_deque_overflows = true;
     FLAG_gc_global = true;
     FLAG_max_new_space_size = (1 << (kPageSizeBits - 10)) * 2;
   }
 }
 
 } }  // namespace v8::internal