[debugger,api] deprecate everything in v8-debug.h

test/cctest/wasm/test-wasm-breakpoints.cc

 // Copyright 2016 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/assembler-inl.h"
 #include "src/debug/debug-interface.h"
 #include "src/frames-inl.h"
 #include "src/property-descriptor.h"
 #include "src/utils.h"
 #include "src/wasm/wasm-macro-gen.h"
@@ skipping 36 matching lines @@
   }
 }
 void CheckLocationsFail(WasmCompiledModule *compiled_module,
                         debug::Location start, debug::Location end) {
   std::vector<debug::BreakLocation> locations;
   bool success =
       compiled_module->GetPossibleBreakpoints(start, end, &locations);
   CHECK(!success);
 }
 
-class BreakHandler {
+class BreakHandler : public debug::DebugDelegate {
  public:
   enum Action {
     Continue = StepAction::LastStepAction + 1,
     StepNext = StepAction::StepNext,
     StepIn = StepAction::StepIn,
     StepOut = StepAction::StepOut
   };
   struct BreakPoint {
     int position;
     Action action;
     BreakPoint(int position, Action action)
         : position(position), action(action) {}
   };
 
   explicit BreakHandler(Isolate* isolate,
                         std::initializer_list<BreakPoint> expected_breaks)
       : isolate_(isolate), expected_breaks_(expected_breaks) {
-    current_handler = this;
-    v8::Debug::SetDebugEventListener(reinterpret_cast<v8::Isolate*>(isolate),
-                                     DebugEventListener);
+    v8::debug::SetDebugDelegate(reinterpret_cast<v8::Isolate*>(isolate_), this);
   }
   ~BreakHandler() {
     // Check that all expected breakpoints have been hit.
     CHECK_EQ(count_, expected_breaks_.size());
-    // BreakHandlers must be correctly stacked.
-    CHECK_EQ(this, current_handler);
-    current_handler = nullptr;
-    v8::Debug::SetDebugEventListener(reinterpret_cast<v8::Isolate*>(isolate_),
-                                     nullptr);
+    v8::debug::SetDebugDelegate(reinterpret_cast<v8::Isolate*>(isolate_),
+                                nullptr);
   }
 
   int count() const { return count_; }
 
  private:
   Isolate* isolate_;
   int count_ = 0;
   std::vector<BreakPoint> expected_breaks_;
 
-  static BreakHandler* current_handler;
-
-  void HandleBreak() {
+  void BreakProgramRequested(v8::Local<v8::Context> paused_context,
+                             v8::Local<v8::Object> exec_state,
+                             v8::Local<v8::Value> break_points_hit) override {
     printf("Break #%d\n", count_);
     CHECK_GT(expected_breaks_.size(), count_);
 
     // Check the current position.
     StackTraceFrameIterator frame_it(isolate_);
     auto summ = FrameSummary::GetTop(frame_it.frame()).AsWasmInterpreted();
     CHECK_EQ(expected_breaks_[count_].position, summ.byte_offset());
 
     Action next_action = expected_breaks_[count_].action;
     switch (next_action) {
       case Continue:
         break;
       case StepNext:
       case StepIn:
       case StepOut:
         isolate_->debug()->PrepareStep(static_cast<StepAction>(next_action));
         break;
       default:
         UNREACHABLE();
     }
     ++count_;
   }
-
-  static void DebugEventListener(const v8::Debug::EventDetails& event_details) {
-    if (event_details.GetEvent() != v8::DebugEvent::Break) return;
-
-    CHECK_NOT_NULL(current_handler);
-    current_handler->HandleBreak();
-  }
 };
 
-// static
-BreakHandler* BreakHandler::current_handler = nullptr;
-
 Handle<JSObject> MakeFakeBreakpoint(Isolate* isolate, int position) {
   Handle<JSObject> obj =
       isolate->factory()->NewJSObject(isolate->object_function());
   // Generate an "isTriggered" method that always returns true.
   // This can/must be refactored once we remove remaining JS parts from the
   // debugger (bug 5530).
   Handle<String> source = isolate->factory()->NewStringFromStaticChars("true");
   Handle<Context> context(isolate->context(), isolate);
   Handle<JSFunction> triggered_fun =
       Compiler::GetFunctionFromString(context, source, NO_PARSE_RESTRICTION,
@@ skipping 137 matching lines @@
                                 {19, BreakHandler::StepIn},   // GetLocal
                                 {21, BreakHandler::StepIn},   // Call
                                 {1, BreakHandler::StepOut},   // in f2
                                 {23, BreakHandler::Continue}  // After Call
                             });
 
   Handle<Object> global(isolate->context()->global_object(), isolate);
   CHECK(!Execution::Call(isolate, main_fun_wrapper, global, 0, nullptr)
              .is_null());
 }