Propagate bailout reason to cpu profile node.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index d532a1f2fd8a01e2d1ef5e82295d5263017b7229..f0a21366d98065450673b669c706af0ef34ccdc1 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -7462,6 +7462,14 @@ int CpuProfileNode::GetLineNumber() const {
 }
 
 
+Handle<String> CpuProfileNode::GetBailoutReason() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfileNode::GetBailoutReason");
+  const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
+  return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
+      node->entry()->bailout_reason()));
+}
+
 double CpuProfileNode::GetTotalTime() const {
   i::Isolate* isolate = i::Isolate::Current();
   IsDeadCheck(isolate, "v8::CpuProfileNode::GetTotalTime");