Support idle time in CPU profiler

tools/tickprocessor.js

 // Copyright 2012 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 231 matching lines @@
   this.currentProducerProfile_ = null;
 };
 inherits(TickProcessor, LogReader);
 
 
 TickProcessor.VmStates = {
   JS: 0,
   GC: 1,
   COMPILER: 2,
   OTHER: 3,
-  EXTERNAL: 4
+  EXTERNAL: 4,
+  IDLE: 5
 };
 
 
 TickProcessor.CodeTypes = {
   CPP: 0,
   SHARED_LIB: 1
 };
 // Otherwise, this is JS-related code. We are not adding it to
 // codeTypes_ map because there can be zillions of them.
 
@@ skipping 640 matching lines @@
       if (arg !== synArg && dispatch === this.argsDispatch_[synArg]) {
         synonims.push(synArg);
         delete this.argsDispatch_[synArg];
       }
     }
     print('  ' + padRight(synonims.join(', '), 20) + dispatch[2]);
   }
   quit(2);
 };