[inspector] added in-deeper-frame continue-to-location strategy

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 9db6b47caf01c79944bb40412c1c9416a62e2a31..daa03fee875f91f342e3e603cdfab103fffde67e 100644
--- a/src/inspector/v8-stack-trace-impl.cc
+++ b/src/inspector/v8-stack-trace-impl.cc
@@ -264,6 +264,32 @@ bool V8StackTraceImpl::isEqualIgnoringTopFrame(
   return current.done() == target.done();
 }
 
+void V8StackTraceImpl::allFrames(std::vector<StackFrame*>* frames) const {
+  StackFrameIterator current(this);
+  while (!current.done()) {
+    frames->push_back(current.frame());
+    current.next();
+  }
+}
+
+bool V8StackTraceImpl::isPrefix(V8StackTraceImpl* currentStack) const {
+  std::vector<StackFrame*> prefix;
+  allFrames(&prefix);
+  std::vector<StackFrame*> current;
+  currentStack->allFrames(&current);
+
+  auto itPrefix = prefix.rbegin();
+  auto itCurrent = current.rbegin();
+  while (itPrefix != prefix.rend() && itCurrent != current.rend()) {
+    if (!(*itPrefix)->isEqual(*itCurrent)) {
+      return false;
+    }
+    ++itPrefix;
+    ++itCurrent;
+  }
+  return itPrefix == prefix.rend();
+}
+
 V8StackTraceImpl::StackFrameIterator::StackFrameIterator(
     const V8StackTraceImpl* stackTrace)
     : m_currentIt(stackTrace->m_frames.begin()),