Reduce webkit CSS prefixes in ui/ styles

ui/file_manager/file_manager/foreground/css/file_manager.css

Index: ui/file_manager/file_manager/foreground/css/file_manager.css
diff --git a/ui/file_manager/file_manager/foreground/css/file_manager.css b/ui/file_manager/file_manager/foreground/css/file_manager.css
index a94c9aeadc769fe2a7bb6d03f16e88b8a131551e..b4dd6f24766c768d79f536a945fc8473649fa062 100644
--- a/ui/file_manager/file_manager/foreground/css/file_manager.css
+++ b/ui/file_manager/file_manager/foreground/css/file_manager.css
@@ -862,7 +862,7 @@ html[dir='rtl'] #search-box .clear {
 
 /* Container for the detail and thumbnail list views. */
 .dialog-body {
-  -webkit-transition: all 180ms ease;
+  transition: all 180ms ease;
   flex: auto;
   position: relative;
 }
@@ -1227,7 +1227,7 @@ html[dir='rtl'] .breadcrumbs .separator {
   height: 0;
 }
 
-@-webkit-keyframes heightAnimation {
+@keyframes heightAnimation {
   0% {
     display: flex;
     height: 0;
@@ -1236,7 +1236,7 @@ html[dir='rtl'] .breadcrumbs .separator {
 
 /* Drive space warning banner. */
 .volume-warning {
-  -webkit-animation: heightAnimation 70ms linear;
+  animation: heightAnimation 70ms linear;
   align-items: center;
   background-color: rgb(79, 129, 232);
   color: white;
@@ -1443,7 +1443,7 @@ body.check-select .thumbnail-grid .thumbnail-item[selected] .checkmark.active {
 }
 
 .thumbnail-grid .img-container > .thumbnail.animate {
-  -webkit-animation: fadeIn 250ms linear;
+  animation: fadeIn 250ms linear;
 }
 
 .thumbnail-grid .shield {
@@ -1563,10 +1563,10 @@ html[dir='rtl'] .badge {
 #directory-tree .tree-item.accepts > .tree-row,
 #list-container list > li.accepts,
 #list-container grid > li.accepts {
-  -webkit-animation: acceptsBlink 200ms linear 1s 3;
+  animation: acceptsBlink 200ms linear 1s 3;
 }
 
-@-webkit-keyframes acceptsBlink {
+@keyframes acceptsBlink {
   0% {
     color: rgb(90, 90, 90);
     background-color: transparent;
@@ -1636,7 +1636,7 @@ li[renaming=''] .badge {
   justify-content: flex-end;
 }
 
-@-webkit-keyframes fadeIn {
+@keyframes fadeIn {
   from {
     opacity: 0;
   }
@@ -1645,7 +1645,7 @@ li[renaming=''] .badge {
   }
 }
 
-@-webkit-keyframes fadeOut {
+@keyframes fadeOut {
   from {
     opacity: 1;
   }
@@ -1807,13 +1807,13 @@ body.check-select #list-container li[selected] .detail-checkmark {
 }
 
 #list-container list li .detail-thumbnail > .thumbnail.animate {
-  -webkit-animation: fadeIn 220ms ease;
+  animation: fadeIn 220ms ease;
 }
 
 body.check-select #list-container list li[selected] .detail-thumbnail
 > .thumbnail {
   /* Fade out after checkmark fades in. */
-  -webkit-animation: fadeOut 0ms 220ms ease backwards;
+  animation: fadeOut 0ms 220ms ease backwards;
   opacity: 0;
 }
 
@@ -2197,7 +2197,7 @@ list.autocomplete-suggestions > [lead] {
 
 /* Progress center */
 
-@-webkit-keyframes progress-center-toggle {
+@keyframes progress-center-toggle {
   /* Height values of each frame are set by script.
    * Keep the animation sync with JS. */
   from {
@@ -2216,7 +2216,7 @@ list.autocomplete-suggestions > [lead] {
 }
 
 #progress-center.animated {
-  -webkit-animation: progress-center-toggle 300ms ease-out;
+  animation: progress-center-toggle 300ms ease-out;
 }
 
 #progress-center-open-view {