Remove webkit prefixes for CSS Animation in chrome/ styles

chrome/browser/resources/ntp4/tile_page.css

Index: chrome/browser/resources/ntp4/tile_page.css
diff --git a/chrome/browser/resources/ntp4/tile_page.css b/chrome/browser/resources/ntp4/tile_page.css
index 982f0d682e4c166947e64214c1ac5d4a091e1187..0abc043507c9ecccb6d51cce41ad73e7079648e9 100644
--- a/chrome/browser/resources/ntp4/tile_page.css
+++ b/chrome/browser/resources/ntp4/tile_page.css
@@ -127,7 +127,7 @@
   -webkit-transition: margin-bottom 200ms;
 }
 
-@-webkit-keyframes bounce {
+@keyframes bounce {
   0% {
     transform: scale(0, 0);
   }
@@ -142,16 +142,16 @@
 }
 
 .tile > .new-tile-contents {
-  -webkit-animation: bounce 500ms ease-in-out;
+  animation: bounce 500ms ease-in-out;
 }
 
-@-webkit-keyframes blipout {
+@keyframes blipout {
   0% {
     transform: scale(1, 1);
   }
 
   60% {
-    -webkit-animation-timing-function: ease-in;
+    animation-timing-function: ease-in;
     opacity: 1;
     transform: scale(1.3, 0.02);
   }
@@ -162,15 +162,15 @@
   }
 
   100% {
-    -webkit-animation-timing-function: linear;
+    animation-timing-function: linear;
     opacity: 0;
     transform: scale(0.3, 0.02);
   }
 }
 
 .tile > .removing-tile-contents {
-  -webkit-animation: blipout 300ms;
-  -webkit-animation-fill-mode: forwards;
+  animation: blipout 300ms;
+  animation-fill-mode: forwards;
   pointer-events: none;
 }