Print Preview: Making margin lines draggable.

chrome/browser/resources/print_preview/print_preview.css

 html {
   height: 100%;
 }
 
 body {
   background: white;
   display: -webkit-box;
   height: 100%;
   margin: 0;
   overflow: hidden;
@@ skipping 654 matching lines @@
 button,
 input[type='text'],
 select {
   font-family: 'Helvetica Neue', Arial, sans-serif;
 }
 
 #mainview {
   -webkit-box-flex: 1;
   -webkit-user-select: none;
   background-color: #ccc;
+  overflow: hidden;
   position: relative;
 }
 
 #pdf-viewer {
   /* pluginFadeInTransitionDuration = 0.2s */
   -webkit-transition: opacity 0.2s linear;
   /* pluginFadeInTransitionDelay = overlayFadeOutTransitionDuration = 0.1s */
   -webkit-transition-delay: 0.1s;
   height: 100%;
   opacity: 1;
@@ skipping 30 matching lines @@
   width: 100%;
 }
 
 #overlay-layer.invisible {
   /* overlayFadeOutTransitionDuration = 0.1s */
   -webkit-transition: opacity 0.1s linear;
   opacity: 0;
   pointer-events: none;
 }
 
-input[type='text'].margin-box {
-  background-color: #2a2a2a;
-  color: #fff;
-  cursor: auto;
-  font-family: arial;
-  font-size: 10px;
-  height: 15px;
-  padding: 5px 10px;
-  position: absolute;
-  text-align: center;
-  width: 40px;
-  z-index: 3;
-}
-
-input[type='text'].margin-box.invalid {
-  background-color: #c11b17;
-}
-
-.draggable-area {
-  background-color: transparent;
-  border-color: transparent;
-  pointer-events: none;
-  position: absolute;
-  z-index: 2;
-}
-
-.margin-line {
-  border-color: #4080FA;
-  border-style: dashed;
-  border-width: 1px;
-  position: absolute;
-  z-index: 2;
-}
-
-#customized-margins {
-  position: absolute;
-  top: 0;
-}
-
 #messages {
   color: #404040;
   font-size: 13px;
   position: relative;
   text-align: center;
   text-shadow: 0 1px 0 rgba(255, 255, 255, .5);
   top: 50%;
 }
 
 html[dir='rtl'] .messages {
@@ skipping 34 matching lines @@
   margin-top: 10px;
 }
 
 input[disabled] + label {
   color: gray;
 }
 
 #error-action-area {
   margin-top: 10px;
 }