posix: directories should only be readable by the user.

Almost all the data we store is private, so we shouldn't even allow
it to be group-readable.  Note that files still obey the user's umask
and if someone wants to make their download directory world-readable
we won't undo that.

BUG=11776

Review URL: http://codereview.chromium.org/113287

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15890 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 39a1a06a6a01617cc5f8f81db8ae23704700a73f
diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index 06f3c1a..ae296ca 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -214,8 +214,7 @@
         }
 
         // Try creating the target dir, continuing on it if it exists already.
-        // Rely on the user's umask to produce correct permissions.
-        if (mkdir(target_path.value().c_str(), 0777) != 0) {
+        if (mkdir(target_path.value().c_str(), 0700) != 0) {
           if (errno != EEXIST)
             error = errno;
         }
@@ -425,7 +424,7 @@
   for (std::vector<FilePath>::reverse_iterator i = subpaths.rbegin();
        i != subpaths.rend(); ++i) {
     if (!DirectoryExists(*i)) {
-      if (mkdir(i->value().c_str(), 0777) != 0)
+      if (mkdir(i->value().c_str(), 0700) != 0)
         return false;
     }
   }