Fail gracefully if profile Temp dir can not be accessed.

chrome/common/chrome_paths.cc

Index: chrome/common/chrome_paths.cc
diff --git a/chrome/common/chrome_paths.cc b/chrome/common/chrome_paths.cc
index 344db91a21f76885c2a2c77a463868179f6a9d48..51aa0191d067a407eff0621949c2a734589ffb71 100644
--- a/chrome/common/chrome_paths.cc
+++ b/chrome/common/chrome_paths.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2010 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -182,7 +182,6 @@ bool PathProvider(int key, FilePath* result) {
       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
         return false;
       cur = cur.Append(FILE_PATH_LITERAL("Temp"));
-      create_dir = true;

[Erik does not do reviews, 2011/01/18 21:36:34]

need to add a comment here or in the header so that people realize that this
doesn't ensure that the directory is created

[Sam Kerner (Chrome), 2011/01/19 05:01:24]

Done.

       break;
     case chrome::DIR_INTERNAL_PLUGINS:
       if (!GetInternalPluginsDirectory(&cur))