DevTools: render console level filter as drop box.

third_party/WebKit/Source/devtools/front_end/ui/textPrompt.css

 /*
  * Copyright (c) 2015 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.
  */
 
+.text-prompt-root {

[dgozman, 2017/01/23 18:57:08]

Did you check this doesn't break all other text prompts?

+    display: flex;
+    align-items: center;
+}
+
 .text-prompt-editing {
     -webkit-user-select: text;
     box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.2),
                 0 2px 4px rgba(0, 0, 0, 0.2),
                 0 2px 6px rgba(0, 0, 0, 0.1);
     background-color: white;
     -webkit-user-modify: read-write-plaintext-only;
     text-overflow: clip !important;
     padding-left: 2px;
     margin-left: -2px;
@@ skipping 19 matching lines @@
 }
 
 ::content .text-prompt[data-placeholder]:empty::before {
     content: attr(data-placeholder);
     color: rgb(128, 128, 128);
 }
 
 .text-prompt-editing ::content br {
     display: none;
 }