Fix compilation with debuggersupport=off.

src/liveedit.cc

 // Copyright 2010 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 1664 matching lines @@
 
 void LiveEditFunctionTracker::RecordFunctionInfo(
     Handle<SharedFunctionInfo> info, FunctionLiteral* lit) {
 }
 
 
 void LiveEditFunctionTracker::RecordRootFunctionInfo(Handle<Code> code) {
 }
 
 
-bool LiveEditFunctionTracker::IsActive() {
+bool LiveEditFunctionTracker::IsActive(Isolate* isolate) {
   return false;
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 
 } }  // namespace v8::internal