[debugger] Ensure at least one breakable position per function.

src/full-codegen/full-codegen.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_FULL_CODEGEN_FULL_CODEGEN_H_
 #define V8_FULL_CODEGEN_FULL_CODEGEN_H_
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/ast/ast.h"
@@ skipping 666 matching lines @@
   // Non-local control flow support.
   void EnterTryBlock(int handler_index, Label* handler);
   void ExitTryBlock(int handler_index);
   void EnterFinallyBlock();
   void ExitFinallyBlock();
   void ClearPendingMessage();
 
   void EmitContinue(Statement* target);
   void EmitBreak(Statement* target);
 
+  void EmitIllegalRedeclaration();
+
   // Loop nesting counter.
   int loop_depth() { return loop_depth_; }
   void increment_loop_depth() { loop_depth_++; }
   void decrement_loop_depth() {
     DCHECK(loop_depth_ > 0);
     loop_depth_--;
   }
 
   MacroAssembler* masm() const { return masm_; }
 
@@ skipping 360 matching lines @@
   Address start_;
   Address instruction_start_;
   uint32_t length_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FULL_CODEGEN_FULL_CODEGEN_H_