ntp4: Make theme attribution separate from chrome logo.

chrome/browser/resources/ntp4/new_tab.css

 /* Copyright (c) 2011 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.
  *
  * This is the stylesheet used by the touch-enabled new tab page
  */
 
 html {
   font-family: segoe ui, arial, helvetica, sans-serif;
   font-size: 14px;
@@ skipping 24 matching lines @@
   width: 100%;
   -webkit-mask-image: -webkit-linear-gradient(bottom, transparent, black 30px);
 }
 
 #page-list {
   /* fill the apps-frame */
   height: 100%;
   display: -webkit-box;
 }
 
+#attribution {
+  bottom: 0;
+  position: absolute;
+  right: 0;
+  z-index: -5;
+}
+
+#attribution > span {
+  display: block;
+  font-size: 84%;
+  /* Text should be left aligned regardless of diretionality. */
+  text-align: left;
+}
+
 #footer {
   background-color: rgba(255, 255, 255, 0.8);
   bottom: 0;
   position: fixed;
   width: 100%;
 }
 
 /* TODO(estade): remove this border hack and replace with a webkit-gradient
  * border-image on #footer once WebKit supports border-image-slice.
  * See https://bugs.webkit.org/show_bug.cgi?id=20127 */
@@ skipping 74 matching lines @@
 #footer.rearrange-mode #trash {
   -webkit-transform: translate(0, 0);
 }
 
 .disclosure-triangle {
   display: inline-block;
   width: 9px;
   height: 9px;
   -webkit-mask-image: url('./ntp4_disclosure_triangle_mask.png');
 }