Removed GetDefaultIsolate{Debugger,ForLocking,StackGuard}.

src/debug.cc

 // 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 3315 matching lines @@
 bool Debugger::StartAgent(const char* name, int port,
                           bool wait_for_connection) {
   if (wait_for_connection) {
     // Suspend V8 if it is already running or set V8 to suspend whenever
     // it starts.
     // Provide stub message handler; V8 auto-continues each suspend
     // when there is no message handler; we doesn't need it.
     // Once become suspended, V8 will stay so indefinitely long, until remote
     // debugger connects and issues "continue" command.
     Debugger::message_handler_ = StubMessageHandler2;
-    v8::Debug::DebugBreak();
+    v8::Debug::DebugBreak(reinterpret_cast<v8::Isolate*>(isolate_));
   }
 
   if (agent_ == NULL) {
     agent_ = new DebuggerAgent(isolate_, name, port);
     agent_->Start();
   }
   return true;
 }
 
 
@@ skipping 401 matching lines @@
     {
       Locker locker(reinterpret_cast<v8::Isolate*>(isolate_));
       isolate_->debugger()->CallMessageDispatchHandler();
     }
   }
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal