Store the language code for the address in autofill profile.

components/autofill/core/browser/autofill_profile.h

Index: components/autofill/core/browser/autofill_profile.h
diff --git a/components/autofill/core/browser/autofill_profile.h b/components/autofill/core/browser/autofill_profile.h
index 7eb979672687fef1a9762c26645188f4ff963f6c..4a079792d857b9dc9edbb426722a7a751908c429 100644
--- a/components/autofill/core/browser/autofill_profile.h
+++ b/components/autofill/core/browser/autofill_profile.h
@@ -80,7 +80,7 @@ class AutofillProfile : public AutofillDataModel {
   // culling duplicates.  The ordering is based on collation order of the
   // textual contents of the fields.
   // GUIDs and origins are not compared, only the values of the contents
-  // themselves.  Full profile comparision, comparison includes multi-valued
+  // themselves.  Full profile comparison, comparison includes multi-valued
   // fields.
   int Compare(const AutofillProfile& profile) const;
 
@@ -132,6 +132,11 @@ class AutofillProfile : public AutofillDataModel {
       size_t minimal_fields_shown,
       std::vector<base::string16>* labels);
 
+  const std::string& language_code() const { return language_code_; }
+  void set_language_code(const std::string& language_code) {
+    language_code_ = language_code;
+  }
+
  private:
   typedef std::vector<const FormGroup*> FormGroupList;
 
@@ -185,6 +190,9 @@ class AutofillProfile : public AutofillDataModel {
   CompanyInfo company_;
   std::vector<PhoneNumber> phone_number_;
   Address address_;
+
+  // The BCP 47 language code that can be used to format |address_| for display.
+  std::string language_code_;
 };
 
 // So we can compare AutofillProfiles with EXPECT_EQ().