Improve stack traces for async functions

src/inspector/v8-stack-trace-impl.cc

Index: src/inspector/v8-stack-trace-impl.cc
diff --git a/src/inspector/v8-stack-trace-impl.cc b/src/inspector/v8-stack-trace-impl.cc
index e1eb59ec22f05490de1d23bf6df97d8da71963a2..c5ed579f3fd481e3b6d3a6968961ca6735ac68bb 100644
--- a/src/inspector/v8-stack-trace-impl.cc
+++ b/src/inspector/v8-stack-trace-impl.cc
@@ -43,12 +43,13 @@ V8StackTraceImpl::Frame toFrame(v8::Local<v8::StackFrame> frame) {
 
 void toFramesVector(v8::Local<v8::StackTrace> stackTrace,
                     std::vector<V8StackTraceImpl::Frame>& frames,
-                    size_t maxStackSize, v8::Isolate* isolate) {
+                    size_t maxStackSize, v8::Isolate* isolate,
+                    bool skipInitialFrame) {
   DCHECK(isolate->InContext());
   int frameCount = stackTrace->GetFrameCount();
   if (frameCount > static_cast<int>(maxStackSize))
     frameCount = static_cast<int>(maxStackSize);
-  for (int i = 0; i < frameCount; i++) {
+  for (int i = skipInitialFrame ? 1 : 0; i < frameCount; i++) {
     v8::Local<v8::StackFrame> stackFrame = stackTrace->GetFrame(i);
     frames.push_back(toFrame(stackFrame));
   }
@@ -108,12 +109,12 @@ void V8StackTraceImpl::setCaptureStackTraceForUncaughtExceptions(
 std::unique_ptr<V8StackTraceImpl> V8StackTraceImpl::create(
     V8Debugger* debugger, int contextGroupId,
     v8::Local<v8::StackTrace> stackTrace, size_t maxStackSize,
-    const String16& description) {
+    const String16& description, bool skipInitialFrame) {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::HandleScope scope(isolate);
   std::vector<V8StackTraceImpl::Frame> frames;
   if (!stackTrace.IsEmpty())
-    toFramesVector(stackTrace, frames, maxStackSize, isolate);
+    toFramesVector(stackTrace, frames, maxStackSize, isolate, skipInitialFrame);
 
   int maxAsyncCallChainDepth = 1;
   V8StackTraceImpl* asyncCallChain = nullptr;
@@ -153,9 +154,10 @@ std::unique_ptr<V8StackTraceImpl> V8StackTraceImpl::create(
   return result;
 }
 
+// static
 std::unique_ptr<V8StackTraceImpl> V8StackTraceImpl::capture(
     V8Debugger* debugger, int contextGroupId, size_t maxStackSize,
-    const String16& description) {
+    const String16& description, bool skipInitialFrame) {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::HandleScope handleScope(isolate);
   v8::Local<v8::StackTrace> stackTrace;
@@ -170,7 +172,7 @@ std::unique_ptr<V8StackTraceImpl> V8StackTraceImpl::capture(
         isolate, static_cast<int>(maxStackSize), stackTraceOptions);
   }
   return V8StackTraceImpl::create(debugger, contextGroupId, stackTrace,
-                                  maxStackSize, description);
+                                  maxStackSize, description, skipInitialFrame);
 }
 
 std::unique_ptr<V8StackTraceImpl> V8StackTraceImpl::cloneImpl() {