ntp4: Make theme attribution separate from chrome logo.

chrome/browser/resources/ntp4/new_tab.css

Index: chrome/browser/resources/ntp4/new_tab.css
diff --git a/chrome/browser/resources/ntp4/new_tab.css b/chrome/browser/resources/ntp4/new_tab.css
index b04e3291b9aa73d2e3cdca6c76afd3ada5039b56..36e77cab6319a220f74a2c0f1194801e9a0b6a96 100644
--- a/chrome/browser/resources/ntp4/new_tab.css
+++ b/chrome/browser/resources/ntp4/new_tab.css
@@ -42,6 +42,20 @@ body {
   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;