Implemented File create API.

runtime/bin/process_script.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Handle dart scripts.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
@@ skipping 40 matching lines @@
   char* canonical_filename = File::GetCanonicalPath(absolute_filename);
   if (canonical_filename == NULL) {
     return absolute_filename;
   }
   free(absolute_filename);
   return canonical_filename;
 }
 
 
 static Dart_Handle ReadStringFromFile(const char* filename) {
-  File* file = File::OpenFile(filename, false);
+  File* file = File::Open(filename, false);
   if (file == NULL) {
     const char* format = "Unable to open file: %s";
     intptr_t len = snprintf(NULL, 0, format, filename);
     // TODO(iposva): Allocate from the zone instead of leaking error string
     // here. On the other hand the binary is about the exit anyway.
     char* error_msg = reinterpret_cast<char*>(malloc(len + 1));
     snprintf(error_msg, len + 1, format, filename);
     return Dart_Error(error_msg);
   }
   intptr_t len = file->Length();
@@ skipping 102 matching lines @@
 
 Dart_Handle LoadSnapshotCreationScript(const char* script_name) {
   Dart_Handle source = ReadStringFromFile(script_name);
   if (!Dart_IsValid(source)) {
     return source;
   }
   Dart_Handle url = Dart_NewString(script_name);
 
   return Dart_LoadScript(url, source, CreateSnapshotLibraryTagHandler);
 }