diff --git a/deps/v8/include/libplatform/v8-tracing.h b/deps/v8/include/libplatform/v8-tracing.h
index 45822d00f371d4..79c647e51e8593 100644
--- a/deps/v8/include/libplatform/v8-tracing.h
+++ b/deps/v8/include/libplatform/v8-tracing.h
@@ -15,9 +15,6 @@
 #include "v8-platform.h"  // NOLINT(build/include_directory)
 
 namespace perfetto {
-namespace trace_processor {
-class TraceProcessorStorage;
-}
 class TracingSession;
 }
 
@@ -31,6 +28,7 @@ namespace platform {
 namespace tracing {
 
 class TraceEventListener;
+class JSONTraceEventListener;
 
 const int kTraceMaxNumArgs = 2;
 
@@ -199,9 +197,6 @@ class V8_PLATFORM_EXPORT TraceConfig {
 
   TraceConfig() : enable_systrace_(false), enable_argument_filter_(false) {}
   TraceRecordMode GetTraceRecordMode() const { return record_mode_; }
-  const StringList& GetEnabledCategories() const {
-    return included_categories_;
-  }
   bool IsSystraceEnabled() const { return enable_systrace_; }
   bool IsArgumentFilterEnabled() const { return enable_argument_filter_; }
 
@@ -234,17 +229,6 @@ class V8_PLATFORM_EXPORT TraceConfig {
 class V8_PLATFORM_EXPORT TracingController
     : public V8_PLATFORM_NON_EXPORTED_BASE(v8::TracingController) {
  public:
-  TracingController();
-  ~TracingController() override;
-
-#if defined(V8_USE_PERFETTO)
-  // Must be called before StartTracing() if V8_USE_PERFETTO is true. Provides
-  // the output stream for the JSON trace data.
-  void InitializeForPerfetto(std::ostream* output_stream);
-  // Provide an optional listener for testing that will receive trace events.
-  // Must be called before StartTracing().
-  void SetTraceEventListenerForTesting(TraceEventListener* listener);
-#else   // defined(V8_USE_PERFETTO)
   // The pointer returned from GetCategoryGroupEnabled() points to a value with
   // zero or more of the following bits. Used in this class only. The
   // TRACE_EVENT macros should only use the value as a bool. These values must
@@ -258,8 +242,19 @@ class V8_PLATFORM_EXPORT TracingController
     ENABLED_FOR_ETW_EXPORT = 1 << 3
   };
 
+  TracingController();
+  ~TracingController() override;
+
   // Takes ownership of |trace_buffer|.
   void Initialize(TraceBuffer* trace_buffer);
+#ifdef V8_USE_PERFETTO
+  // Must be called before StartTracing() if V8_USE_PERFETTO is true. Provides
+  // the output stream for the JSON trace data.
+  void InitializeForPerfetto(std::ostream* output_stream);
+  // Provide an optional listener for testing that will receive trace events.
+  // Must be called before StartTracing().
+  void SetTraceEventListenerForTesting(TraceEventListener* listener);
+#endif
 
   // v8::TracingController implementation.
   const uint8_t* GetCategoryGroupEnabled(const char* category_group) override;
@@ -279,10 +274,6 @@ class V8_PLATFORM_EXPORT TracingController
       unsigned int flags, int64_t timestamp) override;
   void UpdateTraceEventDuration(const uint8_t* category_enabled_flag,
                                 const char* name, uint64_t handle) override;
-
-  static const char* GetCategoryGroupName(const uint8_t* category_enabled_flag);
-#endif  // !defined(V8_USE_PERFETTO)
-
   void AddTraceStateObserver(
       v8::TracingController::TraceStateObserver* observer) override;
   void RemoveTraceStateObserver(
@@ -291,32 +282,27 @@ class V8_PLATFORM_EXPORT TracingController
   void StartTracing(TraceConfig* trace_config);
   void StopTracing();
 
+  static const char* GetCategoryGroupName(const uint8_t* category_enabled_flag);
+
  protected:
-#if !defined(V8_USE_PERFETTO)
   virtual int64_t CurrentTimestampMicroseconds();
   virtual int64_t CurrentCpuTimestampMicroseconds();
-#endif  // !defined(V8_USE_PERFETTO)
 
  private:
-#if !defined(V8_USE_PERFETTO)
   void UpdateCategoryGroupEnabledFlag(size_t category_index);
   void UpdateCategoryGroupEnabledFlags();
-#endif  // !defined(V8_USE_PERFETTO)
 
-  std::unique_ptr<base::Mutex> mutex_;
+  std::unique_ptr<TraceBuffer> trace_buffer_;
   std::unique_ptr<TraceConfig> trace_config_;
-  std::atomic_bool recording_{false};
+  std::unique_ptr<base::Mutex> mutex_;
   std::unordered_set<v8::TracingController::TraceStateObserver*> observers_;
-
-#if defined(V8_USE_PERFETTO)
+  std::atomic_bool recording_{false};
+#ifdef V8_USE_PERFETTO
   std::ostream* output_stream_ = nullptr;
-  std::unique_ptr<perfetto::trace_processor::TraceProcessorStorage>
-      trace_processor_;
+  std::unique_ptr<JSONTraceEventListener> json_listener_;
   TraceEventListener* listener_for_testing_ = nullptr;
   std::unique_ptr<perfetto::TracingSession> tracing_session_;
-#else   // !defined(V8_USE_PERFETTO)
-  std::unique_ptr<TraceBuffer> trace_buffer_;
-#endif  // !defined(V8_USE_PERFETTO)
+#endif
 
   // Disallow copy and assign
   TracingController(const TracingController&) = delete;
diff --git a/deps/v8/include/v8-platform.h b/deps/v8/include/v8-platform.h
index 7cfd18b5708d57..6bf5a0929f6482 100644
--- a/deps/v8/include/v8-platform.h
+++ b/deps/v8/include/v8-platform.h
@@ -236,10 +236,6 @@ class TracingController {
  public:
   virtual ~TracingController() = default;
 
-  // In Perfetto mode, trace events are written using Perfetto's Track Event
-  // API directly without going through the embedder. However, it is still
-  // possible to observe tracing being enabled and disabled.
-#if !defined(V8_USE_PERFETTO)
   /**
    * Called by TRACE_EVENT* macros, don't call this directly.
    * The name parameter is a category group for example:
@@ -285,7 +281,6 @@ class TracingController {
    **/
   virtual void UpdateTraceEventDuration(const uint8_t* category_enabled_flag,
                                         const char* name, uint64_t handle) {}
-#endif  // !defined(V8_USE_PERFETTO)
 
   class TraceStateObserver {
    public: