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

include/v8-profiler.h

Index: include/v8-profiler.h
diff --git a/include/v8-profiler.h b/include/v8-profiler.h
index bcb69f3763e1b76dfc48e215a7e2fad80f235cee..55c8386bdeff4aa1a7bb3570671999013216de35 100644
--- a/include/v8-profiler.h
+++ b/include/v8-profiler.h
@@ -131,6 +131,13 @@ class V8_EXPORT CpuProfileNode {
   /** Returns function name (empty string for anonymous functions.) */
   Local<String> GetFunctionName() const;
 
+  /**
+   * Returns function name (empty string for anonymous functions.)
+   * The string ownership is *not* passed to the caller. It stays valid until
+   * profile is deleted. The function is thread safe.
+   */
+  const char* GetFunctionNameStr() const;
+
   /** Returns id of the script where function is located. */
   int GetScriptId() const;
 
@@ -138,6 +145,13 @@ class V8_EXPORT CpuProfileNode {
   Local<String> GetScriptResourceName() const;
 
   /**
+   * Returns resource name for script from where the function originates.
+   * The string ownership is *not* passed to the caller. It stays valid until
+   * profile is deleted. The function is thread safe.
+   */
+  const char* GetScriptResourceNameStr() const;
+
+  /**
    * Returns the number, 1-based, of the line where the function originates.
    * kNoLineNumberInfo if no line number information is available.
    */