[dart:io] Namespaces for file IO

runtime/bin/platform_fuchsia.cc

 // Copyright (c) 2016, 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.
 
 #include "platform/globals.h"
 #if defined(HOST_OS_FUCHSIA)
 
 #include "bin/platform.h"
 
 #include <magenta/process.h>
@@ skipping 74 matching lines @@
     return NULL;
   }
   return name;
 }
 
 const char* Platform::ResolveExecutablePath() {
   const char* executable_name = Platform::GetExecutableName();
   if (executable_name == NULL) {
     return NULL;
   }
-  if ((executable_name[0] == '/') && File::Exists(executable_name)) {
-    return File::GetCanonicalPath(executable_name);
+  if ((executable_name[0] == '/') && File::Exists(NULL, executable_name)) {
+    return File::GetCanonicalPath(NULL, executable_name);
   }
   if (strchr(executable_name, '/') != NULL) {
-    const char* result = File::GetCanonicalPath(executable_name);
-    if (File::Exists(result)) {
+    const char* result = File::GetCanonicalPath(NULL, executable_name);
+    if (File::Exists(NULL, result)) {
       return result;
     }
   } else {
     const char* path = getenv("PATH");
     if (path == NULL) {
       // If PATH isn't set, make some guesses about where we should look.
       path = "/system/bin:/system/apps:/boot/bin";
     }
     char* pathcopy = DartUtils::ScopedCopyCString(path);
     char* result = DartUtils::ScopedCString(PATH_MAX + 1);
     char* save = NULL;
     while ((pathcopy = strtok_r(pathcopy, ":", &save)) != NULL) {
       snprintf(result, PATH_MAX, "%s/%s", pathcopy, executable_name);
       result[PATH_MAX] = '\0';
-      if (File::Exists(result)) {
-        return File::GetCanonicalPath(result);
+      if (File::Exists(NULL, result)) {
+        return File::GetCanonicalPath(NULL, result);
       }
       pathcopy = NULL;
     }
   }
   // Couldn't find it. This causes null to be returned for
   // Platform.resovledExecutable.
   return NULL;
 }
 
 void Platform::Exit(int exit_code) {
   exit(exit_code);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_FUCHSIA)