[Autofill] Enable Autofill for dynamically created forms.

components/autofill/core/browser/autofill_manager.h

Index: components/autofill/core/browser/autofill_manager.h
diff --git a/components/autofill/core/browser/autofill_manager.h b/components/autofill/core/browser/autofill_manager.h
index 71109638a4ce6e73c695831c4f07065f7c8a1d9e..41aba001201aad8dc1e636add80b557a0cd46c6d 100644
--- a/components/autofill/core/browser/autofill_manager.h
+++ b/components/autofill/core/browser/autofill_manager.h
@@ -26,7 +26,6 @@
 #include "components/autofill/core/browser/form_structure.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/autofill/core/common/form_data.h"
-#include "components/autofill/core/common/forms_seen_state.h"
 
 class GURL;
 
@@ -119,8 +118,7 @@ class AutofillManager : public AutofillDownloadManager::Observer {
   void SetTestDelegate(autofill::AutofillManagerTestDelegate* delegate);
 
   void OnFormsSeen(const std::vector<FormData>& forms,
-                   const base::TimeTicks& timestamp,
-                   autofill::FormsSeenState state);
+                   const base::TimeTicks& timestamp);
 
   // Processes the submitted |form|, saving any new Autofill data and uploading
   // the possible field types for the submitted fields to the crowdsourcing
@@ -320,8 +318,8 @@ class AutofillManager : public AutofillDownloadManager::Observer {
   bool user_did_autofill_;
   // Has the user edited a field that was previously autofilled?
   bool user_did_edit_autofilled_field_;
-  // When the page finished loading.
-  base::TimeTicks forms_loaded_timestamp_;
+  // When the form finished loading.
+  std::map<FormData, base::TimeTicks> forms_loaded_timestamps_;
   // When the user first interacted with a potentially fillable form on this
   // page.
   base::TimeTicks initial_interaction_timestamp_;