[NaCl SDK] Modifying size_t and int to off_t.

native_client_sdk/src/tests/nacl_io_test/filesystem_test.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <string>
 
@@ skipping 22 matching lines @@
 
 }  // namespace
 
 TEST(FilesystemTest, Sanity) {
   MemFsForTesting fs;
 
   ScopedNode file;
   ScopedNode root;
   ScopedNode result_node;
 
-  size_t result_size = 0;
+  off_t result_size = 0;
   int result_bytes = 0;
   char buf1[1024];
 
   // A memory filesystem starts with one directory node: the root.
   EXPECT_EQ(1, fs.num_nodes());
 
   // Fail to open non existent file
   EXPECT_EQ(ENOENT, fs.Access(Path("/foo"), R_OK | W_OK));
   EXPECT_EQ(ENOENT, fs.Open(Path("/foo"), O_RDWR, &result_node));
   EXPECT_EQ(NULL, result_node.get());
@@ skipping 326 matching lines @@
   double expected_count = kTotalSamples / 256.;
   double chi_squared = 0;
   for (int i = 0; i < 256; ++i) {
     double difference = byte_count[i] - expected_count;
     chi_squared += difference * difference / expected_count;
   }
 
   // Approximate chi-squared value for p-value 0.05, 255 degrees-of-freedom.
   EXPECT_LE(chi_squared, 293.24);
 }