Warn users about potentially unwanted downloads.

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 f8dc3dbfa66c46406ee0cc41f1783939bb50585d..1ee375084435a4a57909b5e6a1b2080557985ca3 100644
--- a/chrome/browser/download/download_item_model.cc
+++ b/chrome/browser/download/download_item_model.cc
@@ -329,12 +329,19 @@ string16 DownloadItemModel::GetWarningText(const gfx::Font& font,
           ui::ElideFilename(download_->GetFileNameToReportUser(),
                             font, base_width));
 
+    case content::DOWNLOAD_DANGER_TYPE_POTENTIALLY_UNWANTED:
+      return l10n_util::GetStringFUTF16(
+          IDS_PROMPT_POTENTIALLY_UNWANTED_DOWNLOAD,
+          ui::ElideFilename(download_->GetFileNameToReportUser(),

[benjhayden, 2013/07/22 20:16:19]

pre-compute elided_filename to reduce code duplication?

[asanka, 2013/07/23 15:10:36]

Done.

+                            font, base_width));
+
     case content::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS:
     case content::DOWNLOAD_DANGER_TYPE_MAYBE_DANGEROUS_CONTENT:
     case content::DOWNLOAD_DANGER_TYPE_USER_VALIDATED:
     case content::DOWNLOAD_DANGER_TYPE_MAX:
-      NOTREACHED();
+      break;
   }
+  NOTREACHED();
   return string16();
 }
 
@@ -378,6 +385,7 @@ bool DownloadItemModel::IsMalicious() const {
     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT:
     case content::DOWNLOAD_DANGER_TYPE_UNCOMMON_CONTENT:
     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_HOST:
+    case content::DOWNLOAD_DANGER_TYPE_POTENTIALLY_UNWANTED:
       return true;
 
     case content::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS: