Print Preview: Handling pending print to pdf requests.

chrome/browser/resources/print_preview/print_preview.css

Index: chrome/browser/resources/print_preview/print_preview.css
diff --git a/chrome/browser/resources/print_preview/print_preview.css b/chrome/browser/resources/print_preview/print_preview.css
index 49dad6da3ac399046e225da078eef54d26be19c8..69fd060bf99f42919c064a0e0456b2121a207ee3 100644
--- a/chrome/browser/resources/print_preview/print_preview.css
+++ b/chrome/browser/resources/print_preview/print_preview.css
@@ -749,7 +749,7 @@ html[dir='rtl'] .messages {
   -webkit-margin-end: -3px;
 }
 
-#dancing-dots-text span span {
+.message-with-dots span span {
   -webkit-animation-duration: 1800ms;
   -webkit-animation-iteration-count: infinite;
   -webkit-animation-name: dancing-dots-jump;
@@ -757,11 +757,11 @@ html[dir='rtl'] .messages {
   position: relative;
 }
 
-#dancing-dots-text span span:nth-child(2) {
+.message-with-dots span span:nth-child(2) {
   -webkit-animation-delay: 100ms;
 }
 
-#dancing-dots-text span span:nth-child(3) {
+.message-with-dots span span:nth-child(3) {
   -webkit-animation-delay: 300ms;
 }