diff -r 000000000000 -r 6474c204b198 ipc/chromium/src/base/file_util_win.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/chromium/src/base/file_util_win.cc	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,375 @@
+// Copyright (c) 2006-2008 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 "base/file_util.h"
+
+#include <windows.h>
+#include <shellapi.h>
+#include <shlobj.h>
+#include <time.h>
+#include <string>
+
+#include "base/file_path.h"
+#include "base/logging.h"
+#include "base/scoped_handle.h"
+#include "base/string_util.h"
+#include "base/time.h"
+#include "base/win_util.h"
+
+namespace file_util {
+
+bool AbsolutePath(FilePath* path) {
+  wchar_t file_path_buf[MAX_PATH];
+  if (!_wfullpath(file_path_buf, path->value().c_str(), MAX_PATH))
+    return false;
+  *path = FilePath(file_path_buf);
+  return true;
+}
+
+bool Delete(const FilePath& path, bool recursive) {
+  if (path.value().length() >= MAX_PATH)
+    return false;
+
+  // If we're not recursing use DeleteFile; it should be faster. DeleteFile
+  // fails if passed a directory though, which is why we fall through on
+  // failure to the SHFileOperation.
+  if (!recursive && DeleteFile(path.value().c_str()) != 0)
+    return true;
+
+  // SHFILEOPSTRUCT wants the path to be terminated with two NULLs,
+  // so we have to use wcscpy because wcscpy_s writes non-NULLs
+  // into the rest of the buffer.
+  wchar_t double_terminated_path[MAX_PATH + 1] = {0};
+#pragma warning(suppress:4996)  // don't complain about wcscpy deprecation
+  wcscpy(double_terminated_path, path.value().c_str());
+
+  SHFILEOPSTRUCT file_operation = {0};
+  file_operation.wFunc = FO_DELETE;
+  file_operation.pFrom = double_terminated_path;
+  file_operation.fFlags = FOF_NOERRORUI | FOF_SILENT | FOF_NOCONFIRMATION;
+  if (!recursive)
+    file_operation.fFlags |= FOF_NORECURSION | FOF_FILESONLY;
+  int err = SHFileOperation(&file_operation);
+  // Some versions of Windows return ERROR_FILE_NOT_FOUND when
+  // deleting an empty directory.
+  return (err == 0 || err == ERROR_FILE_NOT_FOUND);
+}
+
+bool CopyFile(const FilePath& from_path, const FilePath& to_path) {
+  // NOTE: I suspect we could support longer paths, but that would involve
+  // analyzing all our usage of files.
+  if (from_path.value().length() >= MAX_PATH ||
+      to_path.value().length() >= MAX_PATH) {
+    return false;
+  }
+  return (::CopyFile(from_path.value().c_str(), to_path.value().c_str(),
+                     false) != 0);
+}
+
+bool ShellCopy(const FilePath& from_path, const FilePath& to_path,
+               bool recursive) {
+  // NOTE: I suspect we could support longer paths, but that would involve
+  // analyzing all our usage of files.
+  if (from_path.value().length() >= MAX_PATH ||
+      to_path.value().length() >= MAX_PATH) {
+    return false;
+  }
+
+  // SHFILEOPSTRUCT wants the path to be terminated with two NULLs,
+  // so we have to use wcscpy because wcscpy_s writes non-NULLs
+  // into the rest of the buffer.
+  wchar_t double_terminated_path_from[MAX_PATH + 1] = {0};
+  wchar_t double_terminated_path_to[MAX_PATH + 1] = {0};
+#pragma warning(suppress:4996)  // don't complain about wcscpy deprecation
+  wcscpy(double_terminated_path_from, from_path.value().c_str());
+#pragma warning(suppress:4996)  // don't complain about wcscpy deprecation
+  wcscpy(double_terminated_path_to, to_path.value().c_str());
+
+  SHFILEOPSTRUCT file_operation = {0};
+  file_operation.wFunc = FO_COPY;
+  file_operation.pFrom = double_terminated_path_from;
+  file_operation.pTo = double_terminated_path_to;
+  file_operation.fFlags = FOF_NOERRORUI | FOF_SILENT | FOF_NOCONFIRMATION |
+                          FOF_NOCONFIRMMKDIR;
+  if (!recursive)
+    file_operation.fFlags |= FOF_NORECURSION | FOF_FILESONLY;
+
+  return (SHFileOperation(&file_operation) == 0);
+}
+
+bool CopyDirectory(const FilePath& from_path, const FilePath& to_path,
+                   bool recursive) {
+  if (recursive)
+    return ShellCopy(from_path, to_path, true);
+
+  // Instead of creating a new directory, we copy the old one to include the
+  // security information of the folder as part of the copy.
+  if (!PathExists(to_path)) {
+    // Except that Vista fails to do that, and instead do a recursive copy if
+    // the target directory doesn't exist.
+    if (win_util::GetWinVersion() >= win_util::WINVERSION_VISTA)
+      CreateDirectory(to_path);
+    else
+      ShellCopy(from_path, to_path, false);
+  }
+
+  FilePath directory = from_path.Append(L"*.*");
+  return ShellCopy(directory, to_path, false);
+}
+
+bool PathExists(const FilePath& path) {
+  return (GetFileAttributes(path.value().c_str()) != INVALID_FILE_ATTRIBUTES);
+}
+
+bool PathIsWritable(const FilePath& path) {
+  HANDLE dir =
+      CreateFile(path.value().c_str(), FILE_ADD_FILE,
+                 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                 NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+
+  if (dir == INVALID_HANDLE_VALUE)
+    return false;
+
+  CloseHandle(dir);
+  return true;
+}
+
+bool DirectoryExists(const FilePath& path) {
+  DWORD fileattr = GetFileAttributes(path.value().c_str());
+  if (fileattr != INVALID_FILE_ATTRIBUTES)
+    return (fileattr & FILE_ATTRIBUTE_DIRECTORY) != 0;
+  return false;
+}
+
+bool GetTempDir(FilePath* path) {
+  wchar_t temp_path[MAX_PATH + 1];
+  DWORD path_len = ::GetTempPath(MAX_PATH, temp_path);
+  if (path_len >= MAX_PATH || path_len <= 0)
+    return false;
+  // TODO(evanm): the old behavior of this function was to always strip the
+  // trailing slash.  We duplicate this here, but it shouldn't be necessary
+  // when everyone is using the appropriate FilePath APIs.
+  std::wstring path_str(temp_path);
+  TrimTrailingSeparator(&path_str);
+  *path = FilePath(path_str);
+  return true;
+}
+
+bool GetShmemTempDir(FilePath* path) {
+  return GetTempDir(path);
+}
+
+bool CreateTemporaryFileName(FilePath* path) {
+  std::wstring temp_path, temp_file;
+
+  if (!GetTempDir(&temp_path))
+    return false;
+
+  if (CreateTemporaryFileNameInDir(temp_path, &temp_file)) {
+    *path = FilePath(temp_file);
+    return true;
+  }
+
+  return false;
+}
+
+FILE* CreateAndOpenTemporaryShmemFile(FilePath* path) {
+  return CreateAndOpenTemporaryFile(path);
+}
+
+// On POSIX we have semantics to create and open a temporary file
+// atomically.
+// TODO(jrg): is there equivalent call to use on Windows instead of
+// going 2-step?
+FILE* CreateAndOpenTemporaryFileInDir(const FilePath& dir, FilePath* path) {
+  std::wstring wstring_path;
+  if (!CreateTemporaryFileNameInDir(dir.value(), &wstring_path)) {
+    return NULL;
+  }
+  *path = FilePath(wstring_path);
+  // Open file in binary mode, to avoid problems with fwrite. On Windows
+  // it replaces \n's with \r\n's, which may surprise you.
+  // Reference: http://msdn.microsoft.com/en-us/library/h9t88zwz(VS.71).aspx
+  return OpenFile(*path, "wb+");
+}
+
+bool CreateTemporaryFileNameInDir(const std::wstring& dir,
+                                  std::wstring* temp_file) {
+  wchar_t temp_name[MAX_PATH + 1];
+
+  if (!GetTempFileName(dir.c_str(), L"", 0, temp_name))
+    return false;  // fail!
+
+  DWORD path_len = GetLongPathName(temp_name, temp_name, MAX_PATH);
+  if (path_len > MAX_PATH + 1 || path_len == 0)
+    return false;  // fail!
+
+  temp_file->assign(temp_name, path_len);
+  return true;
+}
+
+bool CreateNewTempDirectory(const FilePath::StringType& prefix,
+                            FilePath* new_temp_path) {
+  FilePath system_temp_dir;
+  if (!GetTempDir(&system_temp_dir))
+    return false;
+
+  FilePath path_to_create;
+  srand(static_cast<uint32_t>(time(NULL)));
+
+  int count = 0;
+  while (count < 50) {
+    // Try create a new temporary directory with random generated name. If
+    // the one exists, keep trying another path name until we reach some limit.
+    path_to_create = system_temp_dir;
+    std::wstring new_dir_name;
+    new_dir_name.assign(prefix);
+    new_dir_name.append(IntToWString(rand() % kint16max));
+    path_to_create = path_to_create.Append(new_dir_name);
+
+    if (::CreateDirectory(path_to_create.value().c_str(), NULL))
+      break;
+    count++;
+  }
+
+  if (count == 50) {
+    return false;
+  }
+
+  *new_temp_path = path_to_create;
+  return true;
+}
+
+bool CreateDirectory(const FilePath& full_path) {
+  if (DirectoryExists(full_path))
+    return true;
+  int err = SHCreateDirectoryEx(NULL, full_path.value().c_str(), NULL);
+  return err == ERROR_SUCCESS;
+}
+
+bool GetFileInfo(const FilePath& file_path, FileInfo* results) {
+  WIN32_FILE_ATTRIBUTE_DATA attr;
+  if (!GetFileAttributesEx(file_path.ToWStringHack().c_str(),
+                           GetFileExInfoStandard, &attr)) {
+    return false;
+  }
+
+  ULARGE_INTEGER size;
+  size.HighPart = attr.nFileSizeHigh;
+  size.LowPart = attr.nFileSizeLow;
+  results->size = size.QuadPart;
+
+  results->is_directory =
+      (attr.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
+  return true;
+}
+
+FILE* OpenFile(const FilePath& filename, const char* mode) {
+  std::wstring w_mode = ASCIIToWide(std::string(mode));
+  FILE* file;
+  if (_wfopen_s(&file, filename.value().c_str(), w_mode.c_str()) != 0) {
+    return NULL;
+  }
+  return file;
+}
+
+FILE* OpenFile(const std::string& filename, const char* mode) {
+  FILE* file;
+  if (fopen_s(&file, filename.c_str(), mode) != 0) {
+    return NULL;
+  }
+  return file;
+}
+
+int ReadFile(const FilePath& filename, char* data, int size) {
+  ScopedHandle file(CreateFile(filename.value().c_str(),
+                               GENERIC_READ,
+                               FILE_SHARE_READ | FILE_SHARE_WRITE,
+                               NULL,
+                               OPEN_EXISTING,
+                               FILE_FLAG_SEQUENTIAL_SCAN,
+                               NULL));
+  if (file == INVALID_HANDLE_VALUE)
+    return -1;
+
+  int ret_value;
+  DWORD read;
+  if (::ReadFile(file, data, size, &read, NULL) && read == size) {
+    ret_value = static_cast<int>(read);
+  } else {
+    ret_value = -1;
+  }
+
+  return ret_value;
+}
+
+int WriteFile(const FilePath& filename, const char* data, int size) {
+  ScopedHandle file(CreateFile(filename.value().c_str(),
+                               GENERIC_WRITE,
+                               0,
+                               NULL,
+                               CREATE_ALWAYS,
+                               0,
+                               NULL));
+  if (file == INVALID_HANDLE_VALUE) {
+    CHROMIUM_LOG(WARNING) << "CreateFile failed for path " << filename.value() <<
+        " error code=" << GetLastError() <<
+        " error text=" << win_util::FormatLastWin32Error();
+    return -1;
+  }
+
+  DWORD written;
+  BOOL result = ::WriteFile(file, data, size, &written, NULL);
+  if (result && written == size)
+    return static_cast<int>(written);
+
+  if (!result) {
+    // WriteFile failed.
+    CHROMIUM_LOG(WARNING) << "writing file " << filename.value() <<
+        " failed, error code=" << GetLastError() <<
+        " description=" << win_util::FormatLastWin32Error();
+  } else {
+    // Didn't write all the bytes.
+    CHROMIUM_LOG(WARNING) << "wrote" << written << " bytes to " <<
+        filename.value() << " expected " << size;
+  }
+  return -1;
+}
+
+// Gets the current working directory for the process.
+bool GetCurrentDirectory(FilePath* dir) {
+  wchar_t system_buffer[MAX_PATH];
+  system_buffer[0] = 0;
+  DWORD len = ::GetCurrentDirectory(MAX_PATH, system_buffer);
+  if (len == 0 || len > MAX_PATH)
+    return false;
+  // TODO(evanm): the old behavior of this function was to always strip the
+  // trailing slash.  We duplicate this here, but it shouldn't be necessary
+  // when everyone is using the appropriate FilePath APIs.
+  std::wstring dir_str(system_buffer);
+  file_util::TrimTrailingSeparator(&dir_str);
+  *dir = FilePath(dir_str);
+  return true;
+}
+
+// Sets the current working directory for the process.
+bool SetCurrentDirectory(const FilePath& directory) {
+  BOOL ret = ::SetCurrentDirectory(directory.value().c_str());
+  return ret != 0;
+}
+
+// Deprecated functions ----------------------------------------------------
+
+void InsertBeforeExtension(std::wstring* path_str,
+                           const std::wstring& suffix) {
+  FilePath path(*path_str);
+  InsertBeforeExtension(&path, suffix);
+  path_str->assign(path.value());
+}
+void ReplaceExtension(std::wstring* file_name, const std::wstring& extension) {
+  FilePath path(*file_name);
+  ReplaceExtension(&path, extension);
+  file_name->assign(path.value());
+}
+}  // namespace file_util