[Autofill] Improve the merging of two profiles' names.

components/autofill/core/browser/contact_info.h

Index: components/autofill/core/browser/contact_info.h
diff --git a/components/autofill/core/browser/contact_info.h b/components/autofill/core/browser/contact_info.h
index d2e70ba13f323e51b61923def7eed41eec7b8b50..1891eb7c5b196321b83a5d0cf25436240955d31c 100644
--- a/components/autofill/core/browser/contact_info.h
+++ b/components/autofill/core/browser/contact_info.h
@@ -26,6 +26,13 @@ class NameInfo : public FormGroup {
   // The comparison is case sensitive.
   bool ParsedNamesAreEqual(const NameInfo& info) const;
 
+  // Overwrites |this| NameInfo parts with the |new_name| parts if they have
+  // more information.

[Mathieu, 2016/05/13 13:32:51]

// For every non-empty NameInfo part in |new_name|, the corresponding NameInfo
part in |this| is overwritten. Special logic so that a middle initial may not
overwrite a full middle name.

[sebsg, 2016/05/13 17:20:02]

Done.

+  void OverwriteName(const NameInfo& new_name);
+
+  // Returns true if all the name parts (first, middle and last) are empty.
+  bool NamePartsAreEmpty() const;
+
   // FormGroup:
   base::string16 GetRawInfo(ServerFieldType type) const override;
   void SetRawInfo(ServerFieldType type, const base::string16& value) override;