Introduce approximate mode for StandardFrame::Summarize.

src/deoptimizer.cc

 // Copyright 2013 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/deoptimizer.h"
 
 #include "src/accessors.h"
 #include "src/ast/prettyprinter.h"
 #include "src/codegen.h"
 #include "src/disasm.h"
@@ skipping 3365 matching lines @@
 }
 
 
 TranslatedState::TranslatedState(JavaScriptFrame* frame)
     : isolate_(nullptr),
       stack_frame_pointer_(nullptr),
       has_adapted_arguments_(false) {
   int deopt_index = Safepoint::kNoDeoptimizationIndex;
   DeoptimizationInputData* data =
       static_cast<OptimizedFrame*>(frame)->GetDeoptimizationData(&deopt_index);
+  DCHECK(data != nullptr && deopt_index != Safepoint::kNoDeoptimizationIndex);
   TranslationIterator it(data->TranslationByteArray(),
                          data->TranslationIndex(deopt_index)->value());
   Init(frame->fp(), &it, data->LiteralArray(), nullptr /* registers */,
        nullptr /* trace file */);
 }
 
 
 TranslatedState::TranslatedState()
     : isolate_(nullptr),
       stack_frame_pointer_(nullptr),
@@ skipping 414 matching lines @@
       CHECK(value_info->IsMaterializedObject());
 
       value_info->value_ =
           Handle<Object>(previously_materialized_objects->get(i), isolate_);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8