Make selection solid and blue in Files.app.

chrome/browser/resources/file_manager/js/file_table.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.
 
 'use strict';
 
 /**
  * Namespace for utility functions.
  */
 var filelist = {};
@@ skipping 130 matching lines @@
       value: false
     }
   });
 
   tableColumnModelClass.call(columnModel, columns);
   self.columnModel = columnModel;
   self.setDateTimeFormat(true);
   self.setRenderFunction(self.renderTableRow_.bind(self,
       self.getRenderFunction()));
 
-  if (util.platform.newUI())
+  if (util.platform.newUI()) {
     ScrollBar.createVertical(self, self.list);
+    // Keep focus on the file list when clicking on the header.
+    self.header.addEventListener('mousedown', function(e) {
+      self.list.focus();
+      e.preventDefault();
+    });
+  }
 
   var handleSelectionChange = function() {
     var selectAll = self.querySelector('#select-all-checkbox');
     if (selectAll)
       self.updateSelectAllCheckboxState_(selectAll);
   };
 
   Object.defineProperty(self.list_, 'selectionModel', {
     get: function() {
       return this.selectionModel_;
@@ skipping 645 matching lines @@
         break;
       }
     }
     if (url) {
       iconDiv.style.backgroundImage = 'url(' + url + ')';
     } else {
       iconDiv.style.backgroundImage = null;
     }
   }
 };