Add "previewing on hover" support for password field.

components/autofill/core/browser/password_autofill_manager.h

Index: components/autofill/core/browser/password_autofill_manager.h
diff --git a/components/autofill/core/browser/password_autofill_manager.h b/components/autofill/core/browser/password_autofill_manager.h
index ddde78eb0faa337f9a1ef49f98af8daca681e231..c0b4af71cca2f9122be2ed340c2bc26d0323a937 100644
--- a/components/autofill/core/browser/password_autofill_manager.h
+++ b/components/autofill/core/browser/password_autofill_manager.h
@@ -26,6 +26,11 @@ class PasswordAutofillManager {
   explicit PasswordAutofillManager(AutofillDriver* autofill_driver);
   virtual ~PasswordAutofillManager();
 
+  // Previews the password associated with user name |username|. Returns true if
+  // the username and password fields were previewed, false otherwise.
+  bool DidSelectAutofillSuggestion(const FormFieldData& field,

[Ilya Sherman, 2014/03/21 22:35:19]

nit: Let's name this method "DidSelectSuggestion()", and rename the method below
to "DidAcceptSuggestion()".

[ziran.sun, 2014/03/25 18:25:26]

Done.

+                                   const base::string16& username);
+
   // Fills the password associated with user name |username|. Returns true if
   // the username and password fields were filled, false otherwise.
   bool DidAcceptAutofillSuggestion(const FormFieldData& field,