Use the exact-width integer types defined in <stdint.h> rather than

net/base/file_stream_context_win.cc

 // Copyright (c) 2012 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 "net/base/file_stream_context.h"
 
 #include <windows.h>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 98 matching lines @@
       LOG(WARNING) << "WriteFile failed: " << error.os_error;
     return static_cast<int>(error.result);
   }
 
   IOCompletionIsPending(callback, buf);
   return ERR_IO_PENDING;
 }
 
 FileStream::Context::IOResult FileStream::Context::SeekFileImpl(
     base::File::Whence whence,
-    int64 offset) {
+    int64_t offset) {
   LARGE_INTEGER result;
   result.QuadPart = file_.Seek(whence, offset);
   if (result.QuadPart >= 0) {
     SetOffset(&io_context_.overlapped, result);
     return IOResult(result.QuadPart, 0);
   }
 
   return IOResult::FromOSError(GetLastError());
 }
 
@@ skipping 111 matching lines @@
 
   IOResult error = IOResult::FromOSError(os_error);
   if (error.os_error == ERROR_IO_PENDING) {
     InvokeUserCallback();
   } else {
     OnIOCompleted(&io_context_, 0, error.os_error);
   }
 }
 
 }  // namespace net