Add metrics to measure time elapsed between form load and form submission with or without Autofill.

chrome/browser/autofill/autofill_manager_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/string16.h"
@@ skipping 498 matching lines @@
   void AutocompleteSuggestionsReturned(const std::vector<string16>& result) {
     contents_wrapper()->autocomplete_history_manager()->
         SendSuggestions(&result);
   }
 
   void FormsSeen(const std::vector<webkit_glue::FormData>& forms) {
     autofill_manager_->OnFormsSeen(forms);
   }
 
   void FormSubmitted(const FormData& form) {
-    autofill_manager_->OnFormSubmitted(form);
+    autofill_manager_->OnFormSubmitted(form, 0);

[jar (doing other things), 2011/08/31 17:02:21]

Here again, I suspect rather than 0, you should supply:
TimeTicks::TimeTicks().ToInternalValue()

[Ilya Sherman, 2011/08/31 21:56:23]

This is actually just a filler value to make the code compile -- it doesn't
matter what the value is.  But, with the updated API, the argument is now the
more abstract type.

   }
 
   void FillAutofillFormData(int query_id,
                             const webkit_glue::FormData& form,
                             const webkit_glue::FormField& field,
                             int unique_id) {
     autofill_manager_->OnFillAutofillFormData(query_id, form, field, unique_id);
   }
 
   bool GetAutofillSuggestionsMessage(int* page_id,
@@ skipping 2241 matching lines @@
   const FieldTypeSet& possible_types1 =
       form_structure.field(1)->possible_types();
   EXPECT_EQ(1U, possible_types1.size());
   EXPECT_TRUE(possible_types1.find(NAME_FIRST) != possible_types1.end());
   const FieldTypeSet& possible_types2 =
       form_structure.field(2)->possible_types();
   EXPECT_EQ(1U, possible_types2.size());
   EXPECT_TRUE(possible_types2.find(UNKNOWN_TYPE) !=
               possible_types2.end());
 }