[deoptimizer] When deoptimizing code, unlink all functions referring to that code.

src/log.cc

 // Copyright 2011 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/log.h"
 
 #include <cstdarg>
 #include <memory>
 #include <sstream>
 
@@ skipping 1395 matching lines @@
   }
 }
 
 class EnumerateOptimizedFunctionsVisitor: public OptimizedFunctionVisitor {
  public:
   EnumerateOptimizedFunctionsVisitor(Handle<SharedFunctionInfo>* sfis,
                                      Handle<AbstractCode>* code_objects,
                                      int* count)
       : sfis_(sfis), code_objects_(code_objects), count_(count) {}
 
-  virtual void EnterContext(Context* context) {}
-  virtual void LeaveContext(Context* context) {}
-
   virtual void VisitFunction(JSFunction* function) {
     SharedFunctionInfo* sfi = SharedFunctionInfo::cast(function->shared());
     Object* maybe_script = sfi->script();
     if (maybe_script->IsScript()
         && !Script::cast(maybe_script)->HasValidSource()) return;
 
     DCHECK(function->abstract_code()->kind() ==
            AbstractCode::OPTIMIZED_FUNCTION);
     AddFunctionAndCode(sfi, function->abstract_code(), sfis_, code_objects_,
                        *count_);
@@ skipping 429 matching lines @@
 
   if (profiler_listener_.get() != nullptr) {
     removeCodeEventListener(profiler_listener_.get());
   }
 
   return log_->Close();
 }
 
 }  // namespace internal
 }  // namespace v8