[inspector] deduplicate stack frames

src/isolate.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_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <memory>
 #include <queue>
 
@@ skipping 416 matching lines @@
   V(int, code_and_metadata_size, 0)                                           \
   V(int, bytecode_and_metadata_size, 0)                                       \
   /* true if being profiled. Causes collection of extra compile info. */      \
   V(bool, is_profiling, false)                                                \
   /* true if a trace is being formatted through Error.prepareStackTrace. */   \
   V(bool, formatting_stack_trace, false)                                      \
   /* Perform side effect checks on function call and API callbacks. */        \
   V(bool, needs_side_effect_check, false)                                     \
   /* Current code coverage mode */                                            \
   V(debug::Coverage::Mode, code_coverage_mode, debug::Coverage::kBestEffort)  \
+  V(int, last_stack_frame_info_id, 0)                                         \
   ISOLATE_INIT_SIMULATOR_LIST(V)
 
 #define THREAD_LOCAL_TOP_ACCESSOR(type, name)                        \
   inline void set_##name(type v) { thread_local_top_.name##_ = v; }  \
   inline type name() const { return thread_local_top_.name##_; }
 
 #define THREAD_LOCAL_TOP_ADDRESS(type, name) \
   type* name##_address() { return &thread_local_top_.name##_; }
 
 
@@ skipping 1361 matching lines @@
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ISOLATE_H_