[profiler] Add two CpuProfileNode API functions to allow thread safe access to the node.

src/api.cc

 // Copyright 2012 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/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 8561 matching lines @@
     return ToApiHandle<String>(name);
   } else {
     // We do not expect this to fail. Change this if it does.
     i::Handle<i::String> cons = isolate->factory()->NewConsString(
         isolate->factory()->InternalizeUtf8String(entry->name_prefix()),
         name).ToHandleChecked();
     return ToApiHandle<String>(cons);
   }
 }
 
+const char* CpuProfileNode::GetFunctionNameStr() const {
+  const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
+  return node->entry()->name();
+}
 
 int CpuProfileNode::GetScriptId() const {
   const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
   const i::CodeEntry* entry = node->entry();
   return entry->script_id();
 }
 
-
 Local<String> CpuProfileNode::GetScriptResourceName() const {
   const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
   i::Isolate* isolate = node->isolate();
   return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
       node->entry()->resource_name()));
 }
 
+const char* CpuProfileNode::GetScriptResourceNameStr() const {
+  const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
+  return node->entry()->resource_name();
+}
 
 int CpuProfileNode::GetLineNumber() const {
   return reinterpret_cast<const i::ProfileNode*>(this)->entry()->line_number();
 }
 
 
 int CpuProfileNode::GetColumnNumber() const {
   return reinterpret_cast<const i::ProfileNode*>(this)->
       entry()->column_number();
 }
@@ skipping 629 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8