Add supports that allow Autofill to be initiated from textarea field

components/autofill/core/browser/autocomplete_history_manager.cc

 // Copyright 2013 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 "components/autofill/core/browser/autocomplete_history_manager.h"
 
 #include <vector>
 
 #include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
@@ skipping 63 matching lines @@
   const WDResult<std::vector<base::string16> >* autofill_result =
       static_cast<const WDResult<std::vector<base::string16> >*>(result);
   std::vector<base::string16> suggestions = autofill_result->GetValue();
   SendSuggestions(&suggestions);
 }
 
 void AutocompleteHistoryManager::OnGetAutocompleteSuggestions(
     int query_id,
     const base::string16& name,
     const base::string16& prefix,
+    const std::string form_control_type,
     const std::vector<base::string16>& autofill_values,
     const std::vector<base::string16>& autofill_labels,
     const std::vector<base::string16>& autofill_icons,
     const std::vector<int>& autofill_unique_ids) {
   CancelPendingQuery();
 
   query_id_ = query_id;
   autofill_values_ = autofill_values;
   autofill_labels_ = autofill_labels;
   autofill_icons_ = autofill_icons;
   autofill_unique_ids_ = autofill_unique_ids;
-  if (!manager_delegate_->IsAutocompleteEnabled()) {
+  // Don't return autocomplete suggestions for textarea.

[Ilya Sherman, 2014/03/19 23:47:42]

nit: This comment is redundant with the code; please omit it.

[ziran.sun, 2014/03/20 19:03:41]

Done.

+  if (!manager_delegate_->IsAutocompleteEnabled() ||
+      form_control_type == "textarea") {
     SendSuggestions(NULL);
     return;
   }
 
   if (database_.get()) {
     pending_query_handle_ = database_->GetFormValuesForElementName(
         name, prefix, kMaxAutocompleteMenuItems, this);
   }
 }
 
@@ skipping 80 matching lines @@
                                             autofill_unique_ids_);
 
   query_id_ = 0;
   autofill_values_.clear();
   autofill_labels_.clear();
   autofill_icons_.clear();
   autofill_unique_ids_.clear();
 }
 
 }  // namespace autofill