Removed Isolate::EnterDefaultIsolate.

src/isolate.h

 // 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 552 matching lines @@
     return isolate_key_;
   }
 
   // Returns the key used to store process-wide thread IDs.
   static Thread::LocalStorageKey thread_id_key() {
     return thread_id_key_;
   }
 
   static Thread::LocalStorageKey per_isolate_thread_data_key();
 
-  // If a client attempts to create a Locker without specifying an isolate,
-  // we assume that the client is using legacy behavior. Set up the current
-  // thread to be inside the implicit isolate (or fail a check if we have
-  // switched to non-legacy behavior).
-  static void EnterDefaultIsolate();
-
   // Mutex for serializing access to break control structures.
   RecursiveMutex* break_access() { return &break_access_; }
 
   // Mutex for serializing access to debugger.
   RecursiveMutex* debugger_access() { return &debugger_access_; }
 
   Address get_address_from_id(AddressId id);
 
   // Access to top context (where the current function object was created).
   Context* context() { return thread_local_top_.context_; }
@@ skipping 967 matching lines @@
   }
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_