autocomplete: add ability to get full address (hidden behind a flag).

components/autofill/core/browser/form_structure.cc

Index: components/autofill/core/browser/form_structure.cc
diff --git a/components/autofill/core/browser/form_structure.cc b/components/autofill/core/browser/form_structure.cc
index 2f8b83f6cd3d7b28e805bac50b39e33d3d4c7823..625b1656ebab8bceb8aa45df70aee3b3fef7669d 100644
--- a/components/autofill/core/browser/form_structure.cc
+++ b/components/autofill/core/browser/form_structure.cc
@@ -232,6 +232,14 @@ HtmlFieldType FieldTypeFromAutocompleteAttributeValue(
   if (autocomplete_attribute_value == "postal-code")
     return HTML_TYPE_POSTAL_CODE;
 
+  // content_switches.h isn't accessible from here, hence we have
+  // to copy the string literal. This should be removed soon anyway.
+  if (autocomplete_attribute_value == "address" &&
+      CommandLine::ForCurrentProcess()->HasSwitch(
+          "enable-experimental-web-platform-features")) {
+    return HTML_TYPE_FULL_ADDRESS;
+  }
+
   if (autocomplete_attribute_value == "cc-name")
     return HTML_TYPE_CREDIT_CARD_NAME;