[DevTools] Polish device mode UI, include outline into screenshot.

third_party/WebKit/Source/devtools/front_end/emulation/deviceModeView.css

 /*
  * Copyright 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.
  */
 
 :host {
     overflow: hidden;
     align-items: stretch;
     flex: auto;
@@ skipping 30 matching lines @@
     overflow: hidden;
     flex: auto;
 }
 
 .device-mode-media-container {
     flex: none;
     overflow: hidden;
     box-shadow: inset 0 -1px #ccc;
 }
 
+.device-mode-content-clip:not(.device-mode-outline-visible) .device-mode-media-container {
+    margin-bottom: 20px;
+}
+
 .device-mode-presets-container {
     flex: 0 0 20px;
     display: flex;
 }
 
 .device-mode-presets-container-inner {
     flex: auto;
     justify-content: center;
     position: relative;
     background-color: hsl(0, 0%, 90%);
@@ skipping 50 matching lines @@
     margin: 0;
 }
 
 .device-mode-screen-area {
     position: absolute;
     left: 0;
     right: 0;
     width: 0;
     height: 0;
     background-color: #171717;
+}
+
+.device-mode-content-clip:not(.device-mode-outline-visible) .device-mode-screen-area {
     box-shadow: hsl(240, 3%, 84%) 0 0 0 0.5px, hsla(0, 0%, 80%, 0.4) 0 0 20px;
 }
 
 .device-mode-screen-image {
     position: absolute;
     left: 0;
     top: 0;
     width: 100%;
     height: 100%;
 }
 
-.device-mode-outline-image.device-frame-visible + .device-mode-screen-area {
-    box-shadow: none;
-}
-
 .device-mode-resizer {
     position: absolute;
     display: flex;
     align-items: center;
     justify-content: center;
     overflow: hidden;
     transition: background-color 0.1s ease, opacity 0.1s ease;
 }
 
 .device-mode-resizer:hover {
@@ skipping 107 matching lines @@
     position: absolute;
     left: 0;
     right: 0;
     width: 0;
     height: 0;
     display: flex;
     background-color: #fcfcfc;
 }
 
 .device-mode-ruler {
-    pointer-events: none;
-    position: relative;
+    position: absolute;
+    overflow: visible;
 }
 
 .device-mode-ruler-top {
-    flex: 0 0 20px;
+    height: 20px;
+    right: 0;
 }
 
 .device-mode-ruler-left {
+    width: 20px;
+    bottom: 0;
+}
+
+.device-mode-ruler-content {
+    pointer-events: none;
     position: absolute;
-    left: 0;
-    width: 20px;
+    left: -20px;
+    top: -20px;
+}
+
+.device-mode-ruler-top .device-mode-ruler-content {
+    border-top: 1px solid transparent;
+    right: 0;
+    bottom: 20px;
+    background-color: hsla(0, 0%, 98%, 0.9);
+}
+
+.device-mode-content-clip.device-mode-outline-visible .device-mode-ruler-top .device-mode-ruler-content {
+    border-top: 1px solid hsl(0, 0%, 50%);
+}
+
+.device-mode-ruler-left .device-mode-ruler-content {
+    border-left: 1px solid transparent;
+    border-top: 1px solid transparent;
+    right: 20px;
+    bottom: 0;
+}
+
+.device-mode-content-clip.device-mode-outline-visible .device-mode-ruler-left .device-mode-ruler-content {
+    border-left: 1px solid hsl(0, 0%, 50%);
+    border-top: 1px solid hsl(0, 0%, 50%);
+}
+
+.device-mode-ruler-inner {
+    position: absolute;
+}
+
+.device-mode-ruler-top .device-mode-ruler-inner {
     top: 0;
     bottom: 0;
-    transform: translateX(-20px);
+    left: 20px;
+    right: 0;
+    border-bottom: 1px solid hsl(0, 0%, 50%);
+}
+
+.device-mode-ruler-left .device-mode-ruler-inner {
+    left: 0;
+    right: 0;
+    top: 19px;
+    bottom: 0;
+    border-right: 1px solid hsl(0, 0%, 50%);
+    background-color: hsla(0, 0%, 98%, 0.9);
 }
 
 .device-mode-ruler-marker {
     position: absolute;
 }
 
 .device-mode-ruler-top .device-mode-ruler-marker {
     width: 0;
     height: 5px;
     bottom: 0;
@@ skipping 39 matching lines @@
 .device-mode-ruler-top .device-mode-ruler-text {
     left: 2px;
     top: -2px;
 }
 
 .device-mode-ruler-left .device-mode-ruler-text {
     left: -4px;
     top: -15px;
     transform: rotate(270deg);
 }