[WebUI] Fix rest of CSS style nits so I can turn on CSS checker.

chrome/browser/resources/file_manager/css/combobutton.css

Index: chrome/browser/resources/file_manager/css/combobutton.css
diff --git a/chrome/browser/resources/file_manager/css/combobutton.css b/chrome/browser/resources/file_manager/css/combobutton.css
index 42a225a510cbdd8d5b10d26972fb25a24ac99507..0c9594e90465732d1e31174cfaac3c2d0ab7a322 100644
--- a/chrome/browser/resources/file_manager/css/combobutton.css
+++ b/chrome/browser/resources/file_manager/css/combobutton.css
@@ -1,23 +1,21 @@
-/*
- * Copyright (c) 2012 The Chromium Authors. All rights reserved.
+/* 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.
  */
 
-
 .cr-button {
   -webkit-appearance: none;
   -webkit-user-select: none;
   background-image: -webkit-linear-gradient(#ededed, #ededed 38%, #dedede);
-  border-radius: 2px;
   border: 1px solid rgba(0, 0, 0, 0.25);
+  border-radius: 2px;
   box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08),
       inset 0 1px 2px rgba(255, 255, 255, 0.75);
   color: #444;
+  cursor: default;
   font: -webkit-small-control;
   margin: 0 1px 0 0;
   text-shadow: 0 1px 0 rgb(240, 240, 240);
-  cursor: default;
 }
 
 .cr-button:hover {
@@ -47,16 +45,16 @@
 
 
 .cr-combobutton {
-  position: relative;
+  cursor: default;
   display: none;
   font: -webkit-small-control;
-  cursor: default;
+  position: relative;
 }
 
 .cr-combobutton[visible] {
-  display: -webkit-box;
-  -webkit-box-orient: vertical;
   -webkit-box-align: stretch;
+  -webkit-box-orient: vertical;
+  display: -webkit-box;
 }
 
 .cr-cb-container {
@@ -65,12 +63,12 @@
 }
 
 .cr-cb-button-container {
+  -webkit-box-align: stretch;
   -webkit-box-flex: 1;
-  display: -webkit-box;
   -webkit-box-orient: vertical;
-  -webkit-box-align: stretch;
-  border-top-right-radius: 0px;
-  border-bottom-right-radius: 0px;
+  border-bottom-right-radius: 0;
+  border-top-right-radius: 0;
+  display: -webkit-box;
 }
 
 .cr-cb-button-container > * {
@@ -80,11 +78,11 @@
 .cr-cb-trigger {
   -webkit-box-flex: 0;
   -webkit-margin-start: -1px;
-  width: 20px;
+  border-bottom-left-radius: 0;
+  border-top-left-radius: 0;
   display: none;
-  border-top-left-radius: 0px;
-  border-bottom-left-radius: 0px;
   margin-left: -2px;
+  width: 20px;
 }
 
 .cr-cb-trigger > img {
@@ -98,27 +96,26 @@
 }
 
 .cr-cb-popup {
-  position: absolute;
-  right: 1px;
-  display: -webkit-box;
-  opacity: 0;
-  pointer-events: none;
-  -webkit-box-orient: vertical;
   -webkit-box-align: stretch;
-  box-sizing: border-box;
-
+  -webkit-box-orient: vertical;
   -webkit-box-shadow: 0 2px 4px rgba(0, 0, 0, .50);
   background: white;
+  border: 1px solid rgba(0, 0, 0, 0.25);
+  border-radius: 2px;
+  box-sizing: border-box;
   color: black;
   cursor: default;
-  white-space: nowrap;
-  border-radius: 2px;
-  border: 1px solid rgba(0, 0, 0, 0.25);
+  display: -webkit-box;
+  opacity: 0;
   padding:  8px 0;
+  pointer-events: none;
+  position: absolute;
+  right: 1px;
+  white-space: nowrap;
 }
 
 .cr-cb-popup:active {
-  box-shadow: inset 0px 1px 2px rgba(0, 0, 0, 0.1);
+  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
 }
 
 .cr-combobutton[open] .cr-cb-popup {
@@ -135,10 +132,10 @@
 }
 
 .cr-cb-popup > *:hover {
-  background-color: #dce5fa;
+  background-color: rgb(220, 229, 250);
 }
 
 .cr-cb-popup > *:active {
-  background-color: #426dc9;
+  background-color: rgb(66, 109, 201);
   color: #fff;
 }