Move some more file utils to the base namespace.

This also swaps the order of the parameters to GetShmemTempDir so the out
parameter is last, and enhances some documentation.

Review URL: https://codereview.chromium.org/93263002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238144 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: fb4bcfa38b2cdd740fd112fabeb5d45add27354b
diff --git a/base/file_util_android.cc b/base/file_util_android.cc
index 6ac9def..def4d7c 100644
--- a/base/file_util_android.cc
+++ b/base/file_util_android.cc
@@ -7,10 +7,10 @@
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 
-namespace file_util {
+namespace base {
 
-bool GetShmemTempDir(base::FilePath* path, bool executable) {
+bool GetShmemTempDir(bool executable, base::FilePath* path) {
   return PathService::Get(base::DIR_CACHE, path);
 }
 
-}  // namespace file_util
+}  // namespace base