Implement safebrowsing download feedback service, enabled for dev & canary only.

chrome/browser/download/download_item_model.cc

Index: chrome/browser/download/download_item_model.cc
diff --git a/chrome/browser/download/download_item_model.cc b/chrome/browser/download/download_item_model.cc
index 347a554ec8c5425b4b472231464f8222af43c6b8..8561c6b8bac17aade3871439deecb420aec27fff 100644
--- a/chrome/browser/download/download_item_model.cc
+++ b/chrome/browser/download/download_item_model.cc
@@ -12,6 +12,7 @@
 #include "base/supports_user_data.h"
 #include "base/time.h"
 #include "chrome/browser/download/download_crx_util.h"
+#include "chrome/browser/safe_browsing/download_feedback_service.h"
 #include "chrome/common/time_format.h"
 #include "content/public/browser/download_danger_type.h"
 #include "content/public/browser/download_interrupt_reasons.h"
@@ -393,6 +394,13 @@ bool DownloadItemModel::IsMalicious() const {
   return false;
 }
 
+bool DownloadItemModel::ShouldAllowDownloadFeedback() const {
+  if (!IsDangerous())
+    return false;
+  return safe_browsing::DownloadFeedbackService::IsEnabledForDownload(
+      *download_);
+}
+
 bool DownloadItemModel::ShouldRemoveFromShelfWhenComplete() const {
   // If the download was already opened automatically, it should be removed.
   if (download_->GetAutoOpened())