Reduce usage of webkit CSS prefixes in chrome/browser/resources

chrome/browser/resources/ntp4/apps_page.css

Index: chrome/browser/resources/ntp4/apps_page.css
diff --git a/chrome/browser/resources/ntp4/apps_page.css b/chrome/browser/resources/ntp4/apps_page.css
index de0f83a4681d010ded6aff2b854a5ae0dcfd02b8..c64ad4a8740768aa9532ef4f0ba02a3effa7a5f1 100644
--- a/chrome/browser/resources/ntp4/apps_page.css
+++ b/chrome/browser/resources/ntp4/apps_page.css
@@ -9,13 +9,13 @@
 }
 
 .app-contents {
-  -webkit-transition: -webkit-transform 100ms;
+  transition: transform 100ms;
 }
 
 .app-contents:active:not(.suppress-active),
 .app:not(.click-focus):focus .app-contents:not(.suppress-active),
 .drag-representation:not(.placing) .app-contents {
-  -webkit-transform: scale(1.1);
+  transform: scale(1.1);
 }
 
 /* Don't animate the initial scaling.  */
@@ -23,7 +23,7 @@
 /* Active gets applied right before .suppress-active, so to avoid flicker
  * we need to make the scale go back to normal without an animation. */
 .app-contents.suppress-active {
-  -webkit-transition-duration: 0ms;
+  transition-duration: 0ms;
 }
 
 .app-contents > span {