Linux: Change ShellIntegration code to use GetXDGDirectory().

chrome/browser/shell_integration_linux.h

 // 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.
 
 #ifndef CHROME_BROWSER_SHELL_INTEGRATION_LINUX_H_
 #define CHROME_BROWSER_SHELL_INTEGRATION_LINUX_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "url/gurl.h"
 
 namespace base {
 class CommandLine;
 class Environment;
 }
 
 namespace shell_integration_linux {
 
 // Get the path to write user-specific application data files to, as specified
 // in the XDG Base Directory Specification:
 // http://standards.freedesktop.org/basedir-spec/latest/
-// Returns true on success, or false if no such path could be found.
 // Called on the FILE thread.
-bool GetDataWriteLocation(base::Environment* env, base::FilePath* search_path);
+base::FilePath GetDataWriteLocation(base::Environment* env);
 
 // Get the list of paths to search for application data files, in order of
 // preference, as specified in the XDG Base Directory Specification:
 // http://standards.freedesktop.org/basedir-spec/latest/
 // Called on the FILE thread.
 std::vector<base::FilePath> GetDataSearchLocations(base::Environment* env);
 
 // Gets the name for use as the res_class (and possibly res_name) of the
 // window's WM_CLASS property. This is the program name from argv[0], with the
 // first letter capitalized. Equivalent to GDK's gdk_get_program_class().
@@ skipping 94 matching lines @@
 void DeleteDesktopShortcuts(const base::FilePath& profile_path,
                             const std::string& extension_id);
 
 // Delete any desktop shortcuts on desktop or in the application menu that have
 // for the profile in |profile_path|.
 void DeleteAllDesktopShortcuts(const base::FilePath& profile_path);
 
 }  // namespace shell_integration_linux
 
 #endif  // CHROME_BROWSER_SHELL_INTEGRATION_LINUX_H_