Adds paste function to searchbox api and handles paste event on fakebox

chrome/browser/resources/local_ntp/local_ntp.css

 /* Copyright 2013 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. */
 body {
   background-attachment: fixed !important;
   background-color: white;
   cursor: default;
   font-family: arial, sans-serif;
   font-size: small;
   margin: 0;
@@ skipping 90 matching lines @@
 }
 
 @-webkit-keyframes blink {
   0% {
     opacity: 1;
   }
   61.55% {
     opacity: 0;
   }
 }
+
+body.fakebox-drag-focused #cursor {
+  visibility: inherit;
+}
+
 body.fakebox-focused #cursor {
   -webkit-animation: blink 1.3s step-end infinite;
   visibility: inherit;
 }
 
 #most-visited {
   -webkit-user-select: none;
   margin-top: 51px;
   text-align: -webkit-center;
 }
@@ skipping 223 matching lines @@
   opacity: 0.9;
   padding: 3px;
   position: fixed;
   right: 8px;
 }
 
 body.rtl #attribution,body.rtl #recent-tabs {
   left: 8px;
   right: auto;
 }