Move Pickle to base namespace.

components/autofill/core/common/form_data.h

Index: components/autofill/core/common/form_data.h
diff --git a/components/autofill/core/common/form_data.h b/components/autofill/core/common/form_data.h
index 9b2838f48c684c04085e54722a45fdefe08c3124..7ea2107c4271ce53576a3b8e4e8ef009f5d33346 100644
--- a/components/autofill/core/common/form_data.h
+++ b/components/autofill/core/common/form_data.h
@@ -45,10 +45,10 @@ std::ostream& operator<<(std::ostream& os, const FormData& form);
 
 // Serialize FormData. Used by the PasswordManager to persist FormData
 // pertaining to password forms. Serialized data is appended to |pickle|.
-void SerializeFormData(const FormData& form_data, Pickle* pickle);
+void SerializeFormData(const FormData& form_data, base::Pickle* pickle);
 // Deserialize FormData. This assumes that |iter| is currently pointing to
 // the part of a pickle created by SerializeFormData. Returns true on success.
-bool DeserializeFormData(PickleIterator* iter, FormData* form_data);
+bool DeserializeFormData(base::PickleIterator* iter, FormData* form_data);
 
 // Serialize FormData. Used by the PasswordManager to persist FormData
 // pertaining to password forms in base64 string. It is useful since in some