linux: Move linux_util.h from gfx/ to ui/base/gtk.

ui/gfx/linux_util.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 "ui/gfx/linux_util.h"
-
-#include "base/string_util.h"
-
-namespace {
-
-// Common implementation of ConvertAcceleratorsFromWindowsStyle() and
-// RemoveWindowsStyleAccelerators().
-// Replaces all ampersands (as used in our grd files to indicate mnemonics)
-// to |target|, except ampersands appearing in pairs which are replaced by
-// a single ampersand. Any underscores get replaced with two underscores as
-// is needed by GTK.
-std::string ConvertAmpersandsTo(const std::string& label,
-                                const std::string& target) {
-  std::string ret;
-  ret.reserve(label.length() * 2);
-  for (size_t i = 0; i < label.length(); ++i) {
-    if ('_' == label[i]) {
-      ret.push_back('_');
-      ret.push_back('_');
-    } else if ('&' == label[i]) {
-      if (i + 1 < label.length() && '&' == label[i + 1]) {
-        ret.push_back('&');
-        ++i;
-      } else {
-        ret.append(target);
-      }
-    } else {
-      ret.push_back(label[i]);
-    }
-  }
-
-  return ret;
-}
-
-}  // namespace
-
-namespace gfx {
-
-std::string ConvertAcceleratorsFromWindowsStyle(const std::string& label) {
-  return ConvertAmpersandsTo(label, "_");
-}
-
-std::string RemoveWindowsStyleAccelerators(const std::string& label) {
-  return ConvertAmpersandsTo(label, "");
-}
-
-// Replaces all ampersands in |label| with two ampersands. This effectively
-// escapes strings for later processing by ConvertAmpersandsTo(), so that
-// ConvertAmpersandsTo(EscapeWindowsStyleAccelerators(x), *) is |x| with
-// underscores doubled, making the string that appears to the user just |x|.
-std::string EscapeWindowsStyleAccelerators(const std::string& label) {
-  std::string ret;
-  ReplaceChars(label, "&", "&&", &ret);
-  return ret;
-}
-
-}  // namespace gfx