Remove vendor specific CSS prefixes.

chrome/browser/resources/new_new_tab.css

 html {
   /* This is needed because of chrome://theme/css/new_tab.css */
   height: 100%;
 }
 
 body {
   margin: 0;
   height: 100%;
   overflow: auto;
 }
@@ skipping 57 matching lines @@
 
 .thumbnail,
 .thumbnail-container > .title {
   width: 207px; /* natural size is 196 */
   height: 129px; /* 136 */
   -webkit-transition: width .15s, height .15s;
 }
 
 .thumbnail-wrapper {
   display: block;
-  -webkit-background-size: 212px 132px;
+  background-size: 212px 132px;
   background: no-repeat 4px 4px;
   background-color: white;
-  -webkit-border-radius: 5px;
-  -webkit-transition: -webkit-background-size .15s;
+  border-radius: 5px;
+  -webkit-transition: background-size .15s;
   position: relative;
 }
 
 .filler * {
   visibility: hidden;
 }
 
 .filler {
   pointer-events: none;
 }
@@ skipping 18 matching lines @@
   display: -webkit-box;
   -webkit-box-orient: horizontal;
   -webkit-box-align: stretch;
   padding: 3px;
   padding-bottom: 0;
   height: 17px; /* 23 - 2 * 3 */
   cursor: move;
   font-size: 100%;
   line-height: 17px;
   background: hsl(213, 54%, 95%);
-  -webkit-border-top-left-radius: 4px;
-  -webkit-border-top-right-radius: 4px;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
   position: relative;
   margin-top: 21px;
   margin-bottom: -21px;
   -webkit-transition: margin .15s, background .15s;
 }
 
 .edit-bar > * {
   display: block;
   position: relative;
 }
@@ skipping 90 matching lines @@
   padding: 0 3px;
   opacity: 1;
   -webkit-transition: opacity .15s, width .15s;
   color: black;
 }
 
 .thumbnail-container > .title > div {
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
-
   background: no-repeat 0 50%;
-  -webkit-background-size: 16px;
+  background-size: 16px;
   padding-left: 20px; /* we cannot use padding start here because even if we set
                          the direction we always want the icon on the same side
                       */
   padding-right: 0;
 }
 
 html[dir=rtl] .thumbnail-container > .title > div {
   background-position-x: 100%;
   padding-left: 0;
   padding-right: 20px;
   text-align: right;
 }
 
 .thumbnail {
   border: 3px solid hsl(213, 63%, 93%);
   padding: 1px;
-  -webkit-border-radius: 5px;
+  border-radius: 5px;
   display: block;
   -webkit-box-shadow: 0px 2px 2px hsla(0, 0%, 0%, 0);
   -webkit-transition: width .15s, height .15s, border-color .15s,
-      -webkit-border-radius .15s, -webkit-box-shadow .15s;
+      border-radius .15s, -webkit-box-shadow .15s;
 }
 
 .edit-mode-border {
-  -webkit-border-radius: 4px;
+  border-radius: 4px;
 
   /* when dragged over we move this */
   position: relative;
   -webkit-transition: top .15s, left .15s;
 }
 
 .thumbnail-container:focus .thumbnail,
 .thumbnail-container:hover .thumbnail {
   border-color: hsl(213, 66%, 57%);
   -webkit-box-shadow: 0px 2px 2px hsla(0, 0%, 0%, 0);
@@ skipping 54 matching lines @@
 .fade-in {
   -webkit-animation: 'fade-in' .15s;
 }
 
 /* Notification */
 
 #notification {
   position: relative;
   background-color: hsl(52, 100%, 80%);
   border: 1px solid rgb(211, 211, 211);
-  -webkit-border-radius: 6px;
+  border-radius: 6px;
   padding: 7px 15px;
   white-space: nowrap;
   display: table;
   margin: -8px auto 5px auto;
   font-weight: bold;
   opacity: 0;
   pointer-events: none;
   -webkit-transition: opacity .15s;
   z-index: 1;
   color: black;
@@ skipping 63 matching lines @@
 
 .list > .thumbnail-container > .title > div {
   text-decoration: none;
   color: rgb(6, 45, 117);
 }
 
 .item {
   background: no-repeat 0% 50%;
   padding: 2px;
   padding-left: 18px;
-  -webkit-background-size: 16px;
+  background-size: 16px;
   background-color: hsla(213, 63%, 93%, 0);
   display: block;
   line-height: 20px;
   -webkit-box-sizing: border-box;
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
   text-decoration: none;
   font-size: 100%;
 }
@@ skipping 38 matching lines @@
   margin: 2px 0;
 }
 
 /* Made to look like a tooltip using vista/win7 look and feel.
    TODO(arv): Replace with -webkit-appearance once issue 17371 is fixed
  */
 #window-tooltip {
   color: #555;
   pointer-events: none;
   border: 1px solid rgb(118, 118, 118);
-  -webkit-border-radius: 3px;
+  border-radius: 3px;
   padding: 0px 3px;
   background: -webkit-gradient(linear, left top, left bottom,
                                from(white),
                                to(rgb(228, 229, 240)));
   width: auto;
   max-width: 300px;
 }
 
 .hbox {
   display: -webkit-box;
   -webkit-box-orient: horizontal;
 }
 
 #recently-closed {
   background-color: hsla(213, 60%, 92%, .4);
   border: 1px solid hsl(213, 60%, 92%);
-  -webkit-border-radius: 5px;
+  border-radius: 5px;
   padding: 5px 0px;
   white-space: nowrap;
   overflow-x: hidden;
 }
 
 #recently-closed > * {
   display: inline-block;
   max-width: 114px; /* Selected so that we can fit 5 items in EN-US */
   white-space: nowrap;
   overflow: hidden;
@@ skipping 12 matching lines @@
 }
 
 .nav > a:after {
   content: '\00bb'; /* raque gets flipped automatically in rtl */
   font-size: 115%;
   -webkit-padding-start: 2px;
 }
 
 #sync-status {
   display: none;
-  -webkit-border-radius: 6px;
+  border-radius: 6px;
   padding: 5px 0;
   margin: 10px 0;
   white-space: nowrap;
   overflow-x: hidden;
 }
 
 #sync-status > * {
   display: inline-block;
   max-width: none;
   white-space: nowrap;
@@ skipping 206 matching lines @@
 .hide-promo-line {
   opacity: 0;
   pointer-events: none;
 }
 
 #promo-line {
   display: inline-block;
   margin-bottom: 20px;
   background-color: hsl(52, 100%, 80%);
   border: 1px solid rgb(211, 211, 211);
-  -webkit-border-radius: 6px;
+  border-radius: 6px;
   padding: 7px 10px;
   white-space: nowrap;
   text-align: center;
   vertical-align: middle;
   color: black;
   -webkit-transition: opacity .15s;
 }
 
 #promo-line * {
   font-weight: bold;
@@ skipping 52 matching lines @@
   .thumbnail-container > .title {
     width: 150px;
     height: 93px;
   }
 
   .thumbnail-container > .title {
     height: auto;
   }
 
   .thumbnail-wrapper {
-    -webkit-background-size: 150px 93px;
+    background-size: 150px 93px;
   }
 
   .list > .thumbnail-container {
     max-width: 692px;
   }
 
   #notification > * {
     max-width: 300px;
   }
 
   #notification > span > .blacklist-title {
     max-width: 15ex;
   }
 }