Update some more webui progress indicators to new throbber:

ui/webui/resources/css/spinner.css

Index: ui/webui/resources/css/spinner.css
diff --git a/ui/webui/resources/css/spinner.css b/ui/webui/resources/css/spinner.css
index 7f04c9008ed9f879026694d69a941ade0da1527d..48f8a64cb95875c8d763624d4847ad7f47623870 100644
--- a/ui/webui/resources/css/spinner.css
+++ b/ui/webui/resources/css/spinner.css
@@ -4,8 +4,7 @@
 
 .inline-spinner,
 .spinner {
-  -webkit-animation: spinner-animation 1s step-end infinite;
-  background-image: url(chrome://resources/images/spinner.svg);
+  background-image: url(chrome://resources/images/throbber.svg);
   background-size: 100%;
 }
 
@@ -19,42 +18,3 @@
   height: 22px;
   width: 22px;
 }
-
-@-webkit-keyframes spinner-animation {
-  0% {
-    -webkit-transform: rotate(0deg);
-  }
-  8.33% {
-    -webkit-transform: rotate(30deg);
-  }
-  16.67%  {
-    -webkit-transform: rotate(60deg);
-  }
-  25%  {
-    -webkit-transform: rotate(90deg);
-  }
-  33.33%  {
-    -webkit-transform: rotate(120deg);
-  }
-  41.67%  {
-    -webkit-transform: rotate(150deg);
-  }
-  50%  {
-    -webkit-transform: rotate(180deg);
-  }
-  58.33%  {
-    -webkit-transform: rotate(210deg);
-  }
-  66.67%  {
-    -webkit-transform: rotate(240deg);
-  }
-  75%  {
-    -webkit-transform: rotate(270deg);
-  }
-  83.33%  {
-    -webkit-transform: rotate(300deg);
-  }
-  91.67%  {
-    -webkit-transform: rotate(330deg);
-  }
-}