[turbofan] Remove obsolete JSDebugger operator.

src/compiler/js-generic-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 87 matching lines @@
 REPLACE_RUNTIME_CALL(JSCreateWithContext, Runtime::kPushWithContext)
 REPLACE_RUNTIME_CALL(JSCreateBlockContext, Runtime::kPushBlockContext)
 REPLACE_RUNTIME_CALL(JSCreateModuleContext, Runtime::kPushModuleContext)
 REPLACE_RUNTIME_CALL(JSCreateScriptContext, Runtime::kAbort)
 #undef REPLACE_RUNTIME
 
 
 #define REPLACE_UNIMPLEMENTED(op) \
   void JSGenericLowering::Lower##op(Node* node) { UNIMPLEMENTED(); }
 REPLACE_UNIMPLEMENTED(JSYield)
-REPLACE_UNIMPLEMENTED(JSDebugger)
 #undef REPLACE_UNIMPLEMENTED
 
 
 static CallDescriptor::Flags FlagsForNode(Node* node) {
   CallDescriptor::Flags result = CallDescriptor::kNoFlags;
   if (OperatorProperties::GetFrameStateInputCount(node->op()) > 0) {
     result |= CallDescriptor::kNeedsFrameState;
   }
   return result;
 }
@@ skipping 429 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8