Autofill should not allow overwrite of field data when merging profile data

chrome/browser/autofill/autofill_profile.cc

Index: chrome/browser/autofill/autofill_profile.cc
diff --git a/chrome/browser/autofill/autofill_profile.cc b/chrome/browser/autofill/autofill_profile.cc
index efcdffda93f9f357cd18987c2b17f3713077465e..40a749b2e8347fd18f9a6f5b25459a4b28864492 100644
--- a/chrome/browser/autofill/autofill_profile.cc
+++ b/chrome/browser/autofill/autofill_profile.cc
@@ -434,7 +434,9 @@ bool AutoFillProfile::operator!=(const AutoFillProfile& profile) const {
 
 const string16 AutoFillProfile::PrimaryValue() const {
   return GetFieldText(AutoFillType(NAME_FULL)) +
-         GetFieldText(AutoFillType(ADDRESS_HOME_LINE1));
+         GetFieldText(AutoFillType(ADDRESS_HOME_LINE1)) +
+         GetFieldText(AutoFillType(ADDRESS_HOME_LINE2)) +
+         GetFieldText(AutoFillType(EMAIL_ADDRESS));
 }
 
 Address* AutoFillProfile::GetHomeAddress() {