[css-flexbox] Fix min-size: auto for a non-auto flex basis

chrome/renderer/resources/plugins/plugin_placeholders.css

 /* 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. */
 
 html, body {
   -webkit-user-select: none;
   font-family: sans-serif;
   height: 100%;
   margin: 0;
   overflow: hidden;
@@ skipping 23 matching lines @@
   align-items: center;
   border: 1px black solid;
   box-sizing: border-box;
   display: flex;
   height: 100%;
   justify-content: center;
   position: absolute;
   width: 100%;
 }
 
+#inner {

[tommycli, 2015/10/28 21:02:01]

probably not needed

[cbiesinger, 2015/10/28 21:13:14]

ok, removed -- added this one more just to be safe.

+  min-height: 0;
+  min-width: 0;
+}
+
 #close {
   background-image: -webkit-image-set(
       url(../../../../ui/resources/default_100_percent/close_2.png) 1x,
       url(../../../../ui/resources/default_200_percent/close_2.png) 2x);
   background-position: right top;
   background-repeat: no-repeat;
   cursor: pointer;
   height: 14px;
   position: absolute;
   right: 3px;
@@ skipping 12 matching lines @@
   background-image: -webkit-image-set(
       url(../../../../ui/resources/default_100_percent/close_2_hover.png) 1x,
       url(../../../../ui/resources/default_200_percent/close_2_hover.png) 2x);
 }
 
 #close:active {
   background-image: -webkit-image-set(
       url(../../../../ui/resources/default_100_percent/close_2_pressed.png) 1x,
       url(../../../../ui/resources/default_200_percent/close_2_pressed.png) 2x);
 }