Do not autofill element when there is no autofill suggestion from profile

components/autofill/core/browser/autofill_manager.cc

Index: components/autofill/core/browser/autofill_manager.cc
diff --git a/components/autofill/core/browser/autofill_manager.cc b/components/autofill/core/browser/autofill_manager.cc
index bfb8d492ca0e0cdfd936c8c9095c1ad72184f021..0ed5aa0223b389074a505a2a9f40399cf3813889 100644
--- a/components/autofill/core/browser/autofill_manager.cc
+++ b/components/autofill/core/browser/autofill_manager.cc
@@ -557,6 +557,9 @@ void AutofillManager::FillOrPreviewForm(
         // Mark the cached field as autofilled, so that we can detect when a
         // user edits an autofilled field (for metrics).
         form_structure->field(i)->is_autofilled = true;

[Ilya Sherman, 2014/06/03 20:39:31]

nit: Please leave a blank line after this one.

+        // Mark the field as autofilled when a non-empty value is assigned to
+        // it.

[Ilya Sherman, 2014/06/03 20:39:31]

nit: Please extend this comment with "This allows the renderer to distinguish
autofilled fields from fields with non-empty values, such as select-one fields."

+        result.fields[i].is_autofilled = true;
 
         if (should_notify)
           manager_delegate_->DidFillOrPreviewField(value, profile_full_name);