Debugger: use debug break slot to break on call.

src/full-codegen.h

Index: src/full-codegen.h
diff --git a/src/full-codegen.h b/src/full-codegen.h
index b4294f585606625b12804a918d3df9a1f0fcc61f..e5cc3e84936966a457413c839a7bda16b8506274 100644
--- a/src/full-codegen.h
+++ b/src/full-codegen.h
@@ -676,6 +676,10 @@ class FullCodeGenerator: public AstVisitor {
   // This is used in loop headers where we want to break for each iteration.
   void SetExpressionAsStatementPosition(Expression* expr);
 
+  void SetCallPosition(Expression* expr, int argc);
+
+  void SetConstructCallPosition(Expression* expr);
+
   // Non-local control flow support.
   void EnterTryBlock(int handler_index, Label* handler);
   void ExitTryBlock(int handler_index);