Remove obsolete support for an experimental multipass compiler.

src/flag-definitions.h

 // Copyright 2008 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 115 matching lines @@
             "check stack for overflow, interrupt, breakpoint")
 
 // codegen.cc
 DEFINE_bool(lazy, true, "use lazy compilation")
 DEFINE_bool(debug_info, true, "add debug information to compiled functions")
 
 // compiler.cc
 DEFINE_bool(strict, false, "strict error checking")
 DEFINE_int(min_preparse_length, 1024,
            "Minimum length for automatic enable preparsing")
-DEFINE_bool(multipass, false, "use the multipass code generator")
 
 // compilation-cache.cc
 DEFINE_bool(compilation_cache, true, "enable compilation cache")
 
 // debug.cc
 DEFINE_bool(remote_debugging, false, "enable remote debugging")
 DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response")
 DEFINE_bool(debugger_auto_break, false,
             "automatically set the debug break flag when debugger commands are "
             "in the queue (experimental)")
@@ skipping 239 matching lines @@
 #undef FLAG
 
 #undef DEFINE_bool
 #undef DEFINE_int
 #undef DEFINE_string
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META