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

include/v8-profiler.h

 // Copyright 2010 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.
 
 #ifndef V8_V8_PROFILER_H_
 #define V8_V8_PROFILER_H_
 
 #include <vector>
 #include "v8.h"  // NOLINT(build/include)
 
@@ skipping 113 matching lines @@
     /** The 1-based number of the source line where the function originates. */
     int line;
 
     /** The count of samples associated with the source line. */
     unsigned int hit_count;
   };
 
   /** 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;
 
   /** Returns resource name for script from where the function originates. */
   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.
    */
   int GetLineNumber() const;
 
   /**
    * Returns 1-based number of the column where the function originates.
    * kNoColumnNumberInfo if no column number information is available.
    */
   int GetColumnNumber() const;
@@ skipping 709 matching lines @@
   uint32_t index;  // Index of the time interval that was changed.
   uint32_t count;  // New value of count field for the interval with this index.
   uint32_t size;  // New value of size field for the interval with this index.
 };
 
 
 }  // namespace v8
 
 
 #endif  // V8_V8_PROFILER_H_