1 files changed, 0 insertions, 169 deletions

diff --git a/deps/v8/include/v8-embedder-heap.h b/deps/v8/include/v8-embedder-heap.h
index f994cdfdf3..9e2e3ef58c 100644
--- a/deps/v8/include/v8-embedder-heap.h
+++ b/deps/v8/include/v8-embedder-heap.h
@@ -5,27 +5,14 @@
 #ifndef INCLUDE_V8_EMBEDDER_HEAP_H_
 #define INCLUDE_V8_EMBEDDER_HEAP_H_
 
-#include <stddef.h>
-#include <stdint.h>
-
-#include <utility>
-#include <vector>
-
-#include "cppgc/common.h"
-#include "v8-local-handle.h"   // NOLINT(build/include_directory)
 #include "v8-traced-handle.h"  // NOLINT(build/include_directory)
 #include "v8config.h"          // NOLINT(build/include_directory)
 
 namespace v8 {
 
-class Data;
 class Isolate;
 class Value;
 
-namespace internal {
-class LocalEmbedderHeapTracer;
-}  // namespace internal
-
 /**
  * Handler for embedder roots on non-unified heap garbage collections.
  */
@@ -62,162 +49,6 @@ class V8_EXPORT EmbedderRootsHandler {
   virtual void ResetRoot(const v8::TracedReference<v8::Value>& handle) = 0;
 };
 
-/**
- * Interface for tracing through the embedder heap. During a V8 garbage
- * collection, V8 collects hidden fields of all potential wrappers, and at the
- * end of its marking phase iterates the collection and asks the embedder to
- * trace through its heap and use reporter to report each JavaScript object
- * reachable from any of the given wrappers.
- */
-class V8_EXPORT
-// GCC doesn't like combining __attribute__(()) with [[deprecated]].
-#ifdef __clang__
-V8_DEPRECATED("Use CppHeap when working with v8::TracedReference.")
-#endif  // __clang__
-    EmbedderHeapTracer {
- public:
-  using EmbedderStackState = cppgc::EmbedderStackState;
-
-  enum TraceFlags : uint64_t {
-    kNoFlags = 0,
-    kReduceMemory = 1 << 0,
-    kForced = 1 << 2,
-  };
-
-  /**
-   * Interface for iterating through |TracedReference| handles.
-   */
-  class V8_EXPORT TracedGlobalHandleVisitor {
-   public:
-    virtual ~TracedGlobalHandleVisitor() = default;
-    virtual void VisitTracedReference(const TracedReference<Value>& handle) {}
-  };
-
-  /**
-   * Summary of a garbage collection cycle. See |TraceEpilogue| on how the
-   * summary is reported.
-   */
-  struct TraceSummary {
-    /**
-     * Time spent managing the retained memory in milliseconds. This can e.g.
-     * include the time tracing through objects in the embedder.
-     */
-    double time = 0.0;
-
-    /**
-     * Memory retained by the embedder through the |EmbedderHeapTracer|
-     * mechanism in bytes.
-     */
-    size_t allocated_size = 0;
-  };
-
-  virtual ~EmbedderHeapTracer() = default;
-
-  /**
-   * Iterates all |TracedReference| handles created for the |v8::Isolate| the
-   * tracer is attached to.
-   */
-  void IterateTracedGlobalHandles(TracedGlobalHandleVisitor* visitor);
-
-  /**
-   * Called by the embedder to set the start of the stack which is e.g. used by
-   * V8 to determine whether handles are used from stack or heap.
-   */
-  void SetStackStart(void* stack_start);
-
-  /**
-   * Called by v8 to register internal fields of found wrappers.
-   *
-   * The embedder is expected to store them somewhere and trace reachable
-   * wrappers from them when called through |AdvanceTracing|.
-   */
-  virtual void RegisterV8References(
-      const std::vector<std::pair<void*, void*>>& embedder_fields) = 0;
-
-  void RegisterEmbedderReference(const BasicTracedReference<v8::Data>& ref);
-
-  /**
-   * Called at the beginning of a GC cycle.
-   */
-  virtual void TracePrologue(TraceFlags flags) {}
-
-  /**
-   * Called to advance tracing in the embedder.
-   *
-   * The embedder is expected to trace its heap starting from wrappers reported
-   * by RegisterV8References method, and report back all reachable wrappers.
-   * Furthermore, the embedder is expected to stop tracing by the given
-   * deadline. A deadline of infinity means that tracing should be finished.
-   *
-   * Returns |true| if tracing is done, and false otherwise.
-   */
-  virtual bool AdvanceTracing(double deadline_in_ms) = 0;
-
-  /*
-   * Returns true if there no more tracing work to be done (see AdvanceTracing)
-   * and false otherwise.
-   */
-  virtual bool IsTracingDone() = 0;
-
-  /**
-   * Called at the end of a GC cycle.
-   *
-   * Note that allocation is *not* allowed within |TraceEpilogue|. Can be
-   * overriden to fill a |TraceSummary| that is used by V8 to schedule future
-   * garbage collections.
-   */
-  virtual void TraceEpilogue(TraceSummary* trace_summary) {}
-
-  /**
-   * Called upon entering the final marking pause. No more incremental marking
-   * steps will follow this call.
-   */
-  virtual void EnterFinalPause(EmbedderStackState stack_state) = 0;
-
-  /*
-   * Called by the embedder to request immediate finalization of the currently
-   * running tracing phase that has been started with TracePrologue and not
-   * yet finished with TraceEpilogue.
-   *
-   * Will be a noop when currently not in tracing.
-   *
-   * This is an experimental feature.
-   */
-  void FinalizeTracing();
-
-  /**
-   * See documentation on EmbedderRootsHandler.
-   */
-  virtual bool IsRootForNonTracingGC(
-      const v8::TracedReference<v8::Value>& handle);
-
-  /**
-   * See documentation on EmbedderRootsHandler.
-   */
-  virtual void ResetHandleInNonTracingGC(
-      const v8::TracedReference<v8::Value>& handle);
-
-  /*
-   * Called by the embedder to signal newly allocated or freed memory. Not bound
-   * to tracing phases. Embedders should trade off when increments are reported
-   * as V8 may consult global heuristics on whether to trigger garbage
-   * collection on this change.
-   */
-  void IncreaseAllocatedSize(size_t bytes);
-  void DecreaseAllocatedSize(size_t bytes);
-
-  /*
-   * Returns the v8::Isolate this tracer is attached too and |nullptr| if it
-   * is not attached to any v8::Isolate.
-   */
-  v8::Isolate* isolate() const { return v8_isolate_; }
-
- protected:
-  v8::Isolate* v8_isolate_ = nullptr;
-
-  friend class internal::LocalEmbedderHeapTracer;
-};
-
 }  // namespace v8
 
 #endif  // INCLUDE_V8_EMBEDDER_HEAP_H_