Vectorize download shelf progress indicators

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

Index: chrome/browser/ui/cocoa/download/download_item_cell.mm
diff --git a/chrome/browser/ui/cocoa/download/download_item_cell.mm b/chrome/browser/ui/cocoa/download/download_item_cell.mm
index 6b0bda42d9da8eca8c994032d423c4b235d93ece..244f400a0d6bb5a702ef250552f4e00f116e4a14 100644
--- a/chrome/browser/ui/cocoa/download/download_item_cell.mm
+++ b/chrome/browser/ui/cocoa/download/download_item_cell.mm
@@ -252,6 +252,7 @@ void DummyRTLMirror(gfx::Rect* bounds) {
         if (!indeterminateProgressTimer_) {
           indeterminateProgressTimer_.reset([[IndeterminateProgressTimer alloc]
               initWithDownloadItemCell:self]);
+          progressStartTime_ = base::TimeTicks::Now();
         }
       } else {
         percentDone_ = downloadModel->PercentComplete();
@@ -560,25 +561,27 @@ void DummyRTLMirror(gfx::Rect* bounds) {
         DownloadShelf::kSmallProgressIconSize,
         DownloadShelf::kSmallProgressIconSize);
 
+    canvas.Save();
+    canvas.Translate(gfx::Vector2d(x, y));
+
     gfx::CanvasSkiaPaint canvas(dirtyRect, false);
     canvas.set_composite_alpha(true);
     if (completionAnimation_.get()) {
       if ([completionAnimation_ isAnimating]) {
         if (percentDone_ == -1) {
           DownloadShelf::PaintDownloadComplete(
-              &canvas, base::Bind(&DummyRTLMirror), x, y,
-              [completionAnimation_ currentValue]);
+              &canvas, [completionAnimation_ currentValue]);
         } else {
           DownloadShelf::PaintDownloadInterrupted(
-              &canvas, base::Bind(&DummyRTLMirror), x, y,
-              [completionAnimation_ currentValue]);
+              &canvas, [completionAnimation_ currentValue]);
         }
       }
     } else if (percentDone_ >= 0 || indeterminateProgressTimer_) {
-      DownloadShelf::PaintDownloadProgress(&canvas, base::Bind(&DummyRTLMirror),
-                                           x, y, indeterminateProgressAngle_,
+      DownloadShelf::PaintDownloadProgress(&canvas, progressStartTime_,
                                            percentDone_);
     }
+
+    canvas.Restore();
   }
 
   // Draw icon
@@ -689,9 +692,6 @@ void DummyRTLMirror(gfx::Rect* bounds) {
 }
 
 - (void)updateIndeterminateDownload {
-  indeterminateProgressAngle_ =
-      (indeterminateProgressAngle_ + DownloadShelf::kUnknownIncrementDegrees) %
-      DownloadShelf::kMaxDegrees;
   [[self controlView] setNeedsDisplay:YES];
 }