[Local NTP] Cleanup: Remove support for "icons" layout

chrome/browser/resources/local_ntp/local_ntp.css

Index: chrome/browser/resources/local_ntp/local_ntp.css
diff --git a/chrome/browser/resources/local_ntp/local_ntp.css b/chrome/browser/resources/local_ntp/local_ntp.css
index 184560e9cc32f394350cf6b942a61f09d3d58b99..31851c9fac37aceda93b29815771151510336f5c 100644
--- a/chrome/browser/resources/local_ntp/local_ntp.css
+++ b/chrome/browser/resources/local_ntp/local_ntp.css
@@ -166,42 +166,20 @@ body.fakebox-focused #cursor {
   text-align: -webkit-center;
 }
 
-.icon-ntp #most-visited {
-  margin-top: calc(100px - 36px);
-}
-
 /* Non-Google pages have no Fakebox, so don't need top margin. */
 .non-google-page #most-visited {
   margin-top: 0;
 }
 
 #mv-tiles {
+  /* We need a 16px margin and the tiles have 130px height. */
+  height: calc(2*130px + 16px);
+  line-height: calc(130px + 16px);
   margin: 0;
   position: relative;
   text-align: -webkit-auto;
 }
 
-.thumb-ntp #mv-tiles {
-  /* we need a 16px margin and the tiles have 130px height. */
-  height: calc(2*130px + 16px);
-  line-height: calc(130px + 16px);
-}
-
-.icon-ntp #mv-tiles {
-  background: rgba(255,255,255,0.2);
-  border-radius: 4px;
-  height: calc(2 * 112px);
-  padding: calc(36px - 18px) calc(36px - 18px - 12px);
-}
-
-.icon-ntp.dark #mv-tiles {
-  background: rgba(0,0,0,0.4);
-}
-
-.default-theme.icon-ntp #mv-tiles {
-  background: none;
-}
-
 #mv-notice-x {
   -webkit-mask-image: -webkit-image-set(
       url(chrome-search://local-ntp/images/close_3_mask.png) 1x,
@@ -240,10 +218,6 @@ html[dir=rtl] #mv-notice-x {
   padding: 10px 0;
 }
 
-.icon-ntp #mv-notice {
-  margin-top: 30px;
-}
-
 #mv-notice span {
   cursor: default;
   display: inline-block;