Add preliminary Autofill support for the 'autocompletetype' attribute.

chrome/browser/autofill/form_structure.h

Index: chrome/browser/autofill/form_structure.h
diff --git a/chrome/browser/autofill/form_structure.h b/chrome/browser/autofill/form_structure.h
index d94be92f208efac3efa4daf448d9cd6802120b4e..92e4de9ed1ad13e46c2332cf0341640fdbf0eb60 100644
--- a/chrome/browser/autofill/form_structure.h
+++ b/chrome/browser/autofill/form_structure.h
@@ -96,6 +96,11 @@ class FormStructure {
   // |require_method_post| is true.
   bool ShouldBeParsed(bool require_method_post) const;
 
+  // Returns true if we should query the crowdsourcing server to determine this
+  // form's field types.  If the form includes author-specified types, this will
+  // return false.
+  bool ShouldBeCrowdsourced() const;
+
   // Sets the field types and experiment id to be those set for |cached_form|.
   void UpdateFromCache(const FormStructure& cached_form);
 
@@ -181,6 +186,10 @@ class FormStructure {
   // GET or POST.
   RequestMethod method_;
 
+  // Whether the form includes any field types explicitly specified by the site
+  // author, via the |autocompletetype| attribute.
+  bool has_author_specified_types_;
+
   DISALLOW_COPY_AND_ASSIGN(FormStructure);
 };