DevTools: polish the MQ ruler, move zoom controls to the top.

Source/devtools/front_end/responsiveDesignView.css

 /*
  * Copyright 2014 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.
  */
 
 .responsive-design {
     position: relative;
     background-color: rgb(0, 0, 0);
     overflow: hidden;
@@ skipping 39 matching lines @@
     content: url(Images/statusbarResizerHorizontal.png);
     pointer-events: none;
 }
 
 .responsive-design-slider-height .responsive-design-thumb-handle  {
     transform: rotate(90deg);
 }
 
 .responsive-design-page-scale-container {
     position: absolute !important;
-    bottom: 0;
+    top: 0;
     right: 0;
     padding: 10px;
     background-color: rgba(0, 0, 0, 0.3);
     align-items: center;
 }
 
 .responsive-design-page-scale-label {
     display: block;
     height: 20px;
-    margin: 2px 0;
+    margin: 0 4px;
     padding-top: 3px;
     color: white;
     cursor: default !important;
 }
 
 .responsive-design-page-scale-container .responsive-design-page-scale-button.status-bar-item {
     display: block;
     width: 18px;
     height: 18px;
     border: 1px solid transparent;
@@ skipping 339 matching lines @@
     color: rgb(34, 34, 34);
     position: absolute;
     left: 0;
     right: 0;
     top: 0;
     padding: 2px 4px;
     white-space: nowrap;
     display: flex;
     align-items: center;
     border-bottom: 1px solid rgb(171, 171, 171);
+    z-index: 2;

[dgozman, 2014/09/19 08:41:25]

I think, we can remove all the z-index properties now and just put
.responsive-design-media-container after canvas in DOM hierarchy.

[pfeldman, 2014/09/19 09:21:47]

Done.

 }
 
 .responsive-design-warning > span {
     flex: auto;
     padding-left: 3px;
     overflow: hidden;
 }
 
 .responsive-design-warning > div {
     flex: none;
@@ skipping 14 matching lines @@
     background-color: rgb(105, 194, 236) !important;
 }
 
 /* Media query inspector */
 
 .responsive-design-media-container {
     position: absolute;
     right: 0;
     top: 0;
     padding-bottom: 5px;
-    background-color: rgb(43, 43, 43);
-    box-shadow: inset 0px 5px 7px rgba(0, 0, 0, 0.7);
     overflow: hidden;
 }
 
 /* Media query bars */
 
 .media-inspector-marker-container {
     position: relative;
     height: 14px;
     margin: 2px 0;
     z-index: 1;
 }
 
-.media-inspector-marker-container:hover {
-    z-index: 2;
-}
-
 .media-inspector-marker {
     position: absolute;
     top: 0px;
     bottom: 0px;
     white-space: nowrap;
     border-radius: 2px;
 }
 
 .media-inspector-marker-inactive {
     -webkit-filter: brightness(80%);
@@ skipping 15 matching lines @@
     border-left: 2px solid rgb(80, 226, 40);
     border-right: 2px solid rgb(80, 226, 40);
 }
 
 .media-inspector-marker-min-width {
     background: linear-gradient(to right, rgba(255, 255, 255, 0.27), rgba(0,0,0,0) 30px), linear-gradient(to bottom, rgb(222, 129, 30), rgb(204, 104, 31));
     border-radius: 2px 0 0 2px;
     border-left: 2px solid rgb(255, 181, 142);
 }
 
-.media-inspector-marker-under-highlighted {
-    background: transparent !important;
-    border: none !important;
-}
-
 /* Media query labels */
 
 .media-inspector-marker:not(.media-inspector-marker-highlight) .media-inspector-marker-label-container {
     display: none;
 }
 
 .media-inspector-marker-label-container {
     position: absolute;
 }
 
 .media-inspector-marker-label-container-left {
     left: -2px;
 }
 
 .media-inspector-marker-label-container-right {
     right: -2px;
 }
 
-.media-inspector-marker-serif {
-    position: absolute;
-    top: -60px;
-    bottom: -60px;
-    width: 1px;
-}
-
-.media-inspector-marker-max-width .media-inspector-marker-serif {
-    background-color: rgb(26, 113, 233);
-}
-
-.media-inspector-marker-min-max-width .media-inspector-marker-serif {
-    background-color: rgb(4, 166, 0);
-}
-
-.media-inspector-marker-min-width .media-inspector-marker-serif {
-    background-color: rgb(204, 104, 31);
-}
-
 .media-inspector-marker-label {
     color: rgb(230, 230, 230);
     position: absolute;
     top: 1px;
     bottom: 0;
     font-size: 10px;
     text-shadow: rgba(0, 0, 0, 0.6) 1px 1px;
 }
 
 .media-inspector-label-right {
     right: 4px;
 }
 
 .media-inspector-label-left {
     left: 4px;
 }