Add new danger type for uncommon or unknown downloads.

chrome/browser/resources/downloads.js

 // Copyright (c) 2012 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.
 
 ///////////////////////////////////////////////////////////////////////////////
 // Helper functions
 function $(o) {return document.getElementById(o);}
 
 /**
  * Sets the display style of a node.
@@ skipping 324 matching lines @@
   INTERRUPTED : "INTERRUPTED",
 }
 
 /**
  * Explains why a download is in DANGEROUS state.
  */
 Download.DangerType = {
   NOT_DANGEROUS: "NOT_DANGEROUS",
   DANGEROUS_FILE: "DANGEROUS_FILE",
   DANGEROUS_URL: "DANGEROUS_URL",
-  DANGEROUS_CONTENT: "DANGEROUS_CONTENT"
+  DANGEROUS_CONTENT: "DANGEROUS_CONTENT",
+  UNCOMMON_CONTENT: "UNCOMMON_CONTENT"
 }
 
 /**
  * Constants for the progress meter.
  */
 Download.Progress = {
   width : 48,
   height : 48,
   radius : 24,
   centerX : 24,
@@ skipping 26 matching lines @@
 
   if (this.state_ == Download.States.DANGEROUS) {
     if (this.dangerType_ == Download.DangerType.DANGEROUS_FILE) {
       this.dangerDesc_.textContent = localStrings.getStringF('danger_file_desc',
                                                              this.fileName_);
     } else if (this.dangerType_ == Download.DangerType.DANGEROUS_URL) {
       this.dangerDesc_.textContent = localStrings.getString('danger_url_desc');
     } else if (this.dangerType_ == Download.DangerType.DANGEROUS_CONTENT) {
       this.dangerDesc_.textContent = localStrings.getStringF(
           'danger_content_desc', this.fileName_);
+    } else if (this.dangerType_ == Download.DangerType.UNCOMMON_CONTENT) {
+      this.dangerDesc_.textContent = localStrings.getStringF(
+          'danger_uncommon_desc', this.fileName_);
     }
     this.danger_.style.display = 'block';
     this.safe_.style.display = 'none';
   } else {
     downloads.scheduleIconLoad(this.nodeImg_,
                                'chrome://fileicon/' +
                                    encodeURIComponent(this.filePath_));
 
     if (this.state_ == Download.States.COMPLETE &&
         !this.fileExternallyRemoved_) {
@@ skipping 284 matching lines @@
 openDownloadsFolderLink.oncontextmenu = function() { return false; };
 
 $('search-link').onclick = function () {
   setSearch('');
   return false;
 };
 $('search-form').onsubmit = function () {
   setSearch(this.term.value);
   return false;
 };