Implement new Function.prototype.toString and fix CreateDynamicFunction parsing

src/parsing/parse-info.cc

 // Copyright 2016 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/parsing/parse-info.h"
 
 #include "src/api.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/ast.h"
 #include "src/heap/heap-inl.h"
@@ skipping 13 matching lines @@
       extension_(nullptr),
       compile_options_(ScriptCompiler::kNoCompileOptions),
       script_scope_(nullptr),
       asm_function_scope_(nullptr),
       unicode_cache_(nullptr),
       stack_limit_(0),
       hash_seed_(0),
       compiler_hints_(0),
       start_position_(0),
       end_position_(0),
+      parameters_end_pos_(kNoSourcePosition),
       function_literal_id_(FunctionLiteral::kIdTypeInvalid),
       max_function_literal_id_(FunctionLiteral::kIdTypeInvalid),
       isolate_(nullptr),
       cached_data_(nullptr),
       ast_value_factory_(nullptr),
       function_name_(nullptr),
       literal_(nullptr),
       deferred_handles_(nullptr) {}
 
 ParseInfo::ParseInfo(Handle<SharedFunctionInfo> shared)
@@ skipping 78 matching lines @@
 }
 
 #ifdef DEBUG
 bool ParseInfo::script_is_native() const {
   return script_->type() == Script::TYPE_NATIVE;
 }
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8