Vectorize download shelf progress indicators

chrome/browser/ui/cocoa/download/download_item_cell.h

Index: chrome/browser/ui/cocoa/download/download_item_cell.h
diff --git a/chrome/browser/ui/cocoa/download/download_item_cell.h b/chrome/browser/ui/cocoa/download/download_item_cell.h
index 5107e782e10843ad3ded4f31ec35381788930501..891072e5ff129597a9681e1dbbf86519d070c0fc 100644
--- a/chrome/browser/ui/cocoa/download/download_item_cell.h
+++ b/chrome/browser/ui/cocoa/download/download_item_cell.h
@@ -9,6 +9,7 @@
 #import "chrome/browser/ui/cocoa/gradient_button_cell.h"
 
 #include "base/files/file_path.h"
+#include "base/time/time.h"
 
 class DownloadItemModel;
 @class IndeterminateProgressTimer;
@@ -39,8 +40,7 @@ enum DownloadItemMousePosition {
   int percentDone_;
   base::scoped_nsobject<NSAnimation> completionAnimation_;
 
-  // In degrees, for downloads with no known total size.
-  int indeterminateProgressAngle_;
+  base::TimeTicks progress_start_time_;
   base::scoped_nsobject<IndeterminateProgressTimer> indeterminateProgressTimer_;
 
   BOOL isStatusTextVisible_;