Not hiding butter for copy/move operations by timeout.

chrome/browser/resources/file_manager/js/file_manager.js

Index: chrome/browser/resources/file_manager/js/file_manager.js
diff --git a/chrome/browser/resources/file_manager/js/file_manager.js b/chrome/browser/resources/file_manager/js/file_manager.js
index 481ce465b10b1efff0c249132bd909320b51f8dd..267d66239d0ca286160ff7067d35b1acd85fa70a 100644
--- a/chrome/browser/resources/file_manager/js/file_manager.js
+++ b/chrome/browser/resources/file_manager/js/file_manager.js
@@ -1521,7 +1521,7 @@ FileManager.prototype = {
     var self = this;
     var progress = this.copyManager_.getProgress();
 
-    var options = {progress: progress.percentage, actions: {}};
+    var options = {progress: progress.percentage, actions: {}, timeout: 0};
     options.actions[str('CANCEL_LABEL')] = function cancelPaste() {
       self.copyManager_.requestCancel();
     };
@@ -1545,7 +1545,7 @@ FileManager.prototype = {
       // Perform this check inside Progress event handler, avoid to log error
       // message 'Unknown event reason: PROGRESS' in console.
       if (this.currentButter_) {
-        var options = {progress: progress.percentage};
+        var options = {progress: progress.percentage, timeout: 0};
         this.updateButter(strf('PASTE_ITEMS_REMAINING', progress.pendingItems),
                           options);
       }