IWYU for autofill suggestion.

components/autofill/core/browser/suggestion.h

Index: components/autofill/core/browser/suggestion.h
diff --git a/components/autofill/core/browser/suggestion.h b/components/autofill/core/browser/suggestion.h
index ebf16073b8abf965eb581cfdb58692cc7ec7f965..930ab230f2ddd60ada5edae55053c3b420d18740 100644
--- a/components/autofill/core/browser/suggestion.h
+++ b/components/autofill/core/browser/suggestion.h
@@ -7,16 +7,11 @@
 
 #include <string>
 
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 
 namespace autofill {
 
-class AutofillProfile;
-class CreditCard;
-
 struct Suggestion {
- public:
   enum MatchMode {
     PREFIX_MATCH,    // for prefix matched suggestions;
     SUBSTRING_MATCH  // for substring matched suggestions;