Disable generating of code cache if the debugger is loaded

src/compiler.h

 // Copyright 2012 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.
 
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 711 matching lines @@
       Handle<Code> current_code,
       ConcurrencyMode mode,
       BailoutId osr_ast_id = BailoutId::None());
 
   // Generate and return code from previously queued optimization job.
   // On failure, return the empty handle.
   static Handle<Code> GetConcurrentlyOptimizedCode(OptimizedCompileJob* job);
 
   static bool DebuggerWantsEagerCompilation(
       CompilationInfo* info, bool allow_lazy_without_ctx = false);
+
+  static bool IsCodeCachingActive(Isolate* isolate);
 };
 
 
 class CompilationPhase BASE_EMBEDDED {
  public:
   CompilationPhase(const char* name, CompilationInfo* info);
   ~CompilationPhase();
 
  protected:
   bool ShouldProduceTraceOutput() const;
 
   const char* name() const { return name_; }
   CompilationInfo* info() const { return info_; }
   Isolate* isolate() const { return info()->isolate(); }
   Zone* zone() { return &zone_; }
 
  private:
   const char* name_;
   CompilationInfo* info_;
   Zone zone_;
   unsigned info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_