[inspector] don't make v8::debug::Call for breakProgram.

src/inspector/v8-debugger.cc

Index: src/inspector/v8-debugger.cc
diff --git a/src/inspector/v8-debugger.cc b/src/inspector/v8-debugger.cc
index 5e5f460679c94b1d55bbf5301f168888eddc05fb..1749efcf25d287949f1731d062c39e1b5de92c7e 100644
--- a/src/inspector/v8-debugger.cc
+++ b/src/inspector/v8-debugger.cc
@@ -345,16 +345,7 @@ void V8Debugger::breakProgram() {
   // Don't allow nested breaks.
   if (isPaused()) return;
   if (!canBreakProgram()) return;
-
-  v8::HandleScope scope(m_isolate);
-  v8::Local<v8::Function> breakFunction;
-  if (!v8::Function::New(m_isolate->GetCurrentContext(),
-                         &V8Debugger::breakProgramCallback,
-                         v8::External::New(m_isolate, this), 0,
-                         v8::ConstructorBehavior::kThrow)
-           .ToLocal(&breakFunction))
-    return;
-  v8::debug::Call(debuggerContext(), breakFunction).ToLocalChecked();
+  v8::debug::BreakRightNow(m_isolate);
 }
 
 void V8Debugger::continueProgram() {
@@ -505,25 +496,6 @@ JavaScriptCallFrames V8Debugger::currentCallFrames(int limit) {
   return callFrames;
 }
 
-static V8Debugger* toV8Debugger(v8::Local<v8::Value> data) {
-  void* p = v8::Local<v8::External>::Cast(data)->Value();
-  return static_cast<V8Debugger*>(p);
-}
-
-void V8Debugger::breakProgramCallback(
-    const v8::FunctionCallbackInfo<v8::Value>& info) {
-  DCHECK_EQ(info.Length(), 2);
-  V8Debugger* thisPtr = toV8Debugger(info.Data());
-  if (!thisPtr->enabled()) return;
-  v8::Local<v8::Context> pausedContext =
-      thisPtr->m_isolate->GetCurrentContext();
-  v8::Local<v8::Value> exception;
-  v8::Local<v8::Array> hitBreakpoints;
-  thisPtr->handleProgramBreak(pausedContext,
-                              v8::Local<v8::Object>::Cast(info[0]), exception,
-                              hitBreakpoints);
-}
-
 void V8Debugger::handleProgramBreak(v8::Local<v8::Context> pausedContext,
                                     v8::Local<v8::Object> executionState,
                                     v8::Local<v8::Value> exception,