Linux: Move base/mime_util* to base/nix. It's not used on any other platform.

chrome/browser/ui/gtk/dialogs_kde.cc

 // Copyright (c) 2011 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 <gdk/gdkx.h>
 #include <gtk/gtk.h>
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
-#include "base/mime_util.h"
+#include "base/nix/mime_util_xdg.h"
 #include "base/nix/xdg_util.h"
 #include "base/process_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/gtk/dialogs_common.h"
 #include "content/public/browser/browser_thread.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ skipping 162 matching lines @@
 }
 
 std::string SelectFileDialogImplKDE::GetMimeTypeFilterString() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   std::string filter_string;
   // We need a filter set because the same mime type can appear multiple times.
   std::set<std::string> filter_set;
   for (size_t i = 0; i < file_types_.extensions.size(); ++i) {
     for (size_t j = 0; j < file_types_.extensions[i].size(); ++j) {
       if (!file_types_.extensions[i][j].empty()) {
-        std::string mime_type = mime_util::GetFileMimeType(
+        std::string mime_type = base::nix::GetFileMimeType(
             FilePath("name").ReplaceExtension(file_types_.extensions[i][j]));
         filter_set.insert(mime_type);
       }
     }
   }
   // Add the *.* filter, but only if we have added other filters (otherwise it
   // is implied).
   if (file_types_.include_all_files && !file_types_.extensions.empty())
     filter_set.insert("application/octet-stream");
   // Create the final output string.
@@ skipping 201 matching lines @@
       continue;
     filenames_fp.push_back(path);
   }
 
   if (filenames_fp.empty()) {
     FileNotSelected(params);
     return;
   }
   MultiFilesSelected(filenames_fp, params);
 }