Move InitializeICU() to the V8 API and use it.

src/icu_util.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 13 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 #ifndef V8_ICU_UTIL_H_
 #define V8_ICU_UTIL_H_
 
 namespace v8 {
 
+namespace internal {
+
 // Call this function to load ICU's data tables for the current process.  This
 // function should be called before ICU is used.
 bool InitializeICU();
 
-}  // namespace v8
+} }  // namespace v8::internal
 
 #endif  // V8_ICU_UTIL_H_