Add status area to Aura builds.

chrome/browser/chromeos/status/memory_menu_button.cc

Index: chrome/browser/chromeos/status/memory_menu_button.cc
diff --git a/chrome/browser/chromeos/status/memory_menu_button.cc b/chrome/browser/chromeos/status/memory_menu_button.cc
index ae38c3ccf4d4ff02c429c783aa521c4e7403fcff..f7504d601bbf24d5e7cbfd4ec6823db633fac9d5 100644
--- a/chrome/browser/chromeos/status/memory_menu_button.cc
+++ b/chrome/browser/chromeos/status/memory_menu_button.cc
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Note: this file is used by Aura on all linux platforms, even though it
+// is currently in a chromeos specific location.
+
 #include "chrome/browser/chromeos/status/memory_menu_button.h"
 
 #include "base/utf_string_conversions.h"
@@ -46,8 +49,6 @@ enum {
 
 }  // namespace
 
-namespace chromeos {
-
 // Delay between updates, in seconds.
 const int kUpdateIntervalSeconds = 5;
 
@@ -277,5 +278,3 @@ void MemoryMenuButton::Observe(int type,
       break;
   }
 }
-
-}  // namespace chromeos