fix bustage

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8517 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/status_bubble.h b/chrome/browser/status_bubble.h
index 0f6cd04..04b6369 100644
--- a/chrome/browser/status_bubble.h
+++ b/chrome/browser/status_bubble.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_BROWSER_STATUS_BUBBLE_H_
 #define CHROME_BROWSER_STATUS_BUBBLE_H_
 
+#include <string>
+
 class GURL;
 
 ////////////////////////////////////////////////////////////////////////////////