[inspector] store v8:StackTrace as FixedArray

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 699 matching lines @@
   NO_INLINE(void PushStackTraceAndDie(unsigned int magic1, void* ptr1,
                                       void* ptr2, unsigned int magic2));
   NO_INLINE(void PushStackTraceAndDie(unsigned int magic1, void* ptr1,
                                       void* ptr2, void* ptr3, void* ptr4,
                                       void* ptr5, void* ptr6, void* ptr7,
                                       void* ptr8, unsigned int magic2));
   NO_INLINE(void PushCodeObjectsAndDie(unsigned int magic, void* ptr1,
                                        void* ptr2, void* ptr3, void* ptr4,
                                        void* ptr5, void* ptr6, void* ptr7,
                                        void* ptr8, unsigned int magic2));
-  Handle<JSArray> CaptureCurrentStackTrace(
-      int frame_limit,
-      StackTrace::StackTraceOptions options);
+  Handle<FixedArray> CaptureCurrentStackTrace(
+      int frame_limit, StackTrace::StackTraceOptions options);
   Handle<Object> CaptureSimpleStackTrace(Handle<JSReceiver> error_object,
                                          FrameSkipMode mode,
                                          Handle<Object> caller);
   MaybeHandle<JSReceiver> CaptureAndSetDetailedStackTrace(
       Handle<JSReceiver> error_object);
   MaybeHandle<JSReceiver> CaptureAndSetSimpleStackTrace(
       Handle<JSReceiver> error_object, FrameSkipMode mode,
       Handle<Object> caller);
-  Handle<JSArray> GetDetailedStackTrace(Handle<JSObject> error_object);
+  Handle<FixedArray> GetDetailedStackTrace(Handle<JSObject> error_object);
 
   // Returns if the given context may access the given global object. If
   // the result is false, the pending exception is guaranteed to be
   // set.
   bool MayAccess(Handle<Context> accessing_context, Handle<JSObject> receiver);
 
   void SetFailedAccessCheckCallback(v8::FailedAccessCheckCallback callback);
   void ReportFailedAccessCheck(Handle<JSObject> receiver);
 
   // Exception throwing support. The caller should use the result
@@ skipping 1056 matching lines @@
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ISOLATE_H_