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..99f9a1b95aa94e5a167df41a2bae371adc93fe00 100644
--- a/chrome/browser/ui/cocoa/download/download_item_cell.mm
+++ b/chrome/browser/ui/cocoa/download/download_item_cell.mm
@@ -20,6 +20,7 @@
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
 #include "ui/gfx/text_elider.h"
+#include "ui/native_theme/native_theme.h"
 
 // Distance from top border to icon.
 const CGFloat kImagePaddingTop = 7;
@@ -76,16 +77,6 @@ const CGFloat kInterruptedAnimationDuration = 2.5;
 
 using content::DownloadItem;
 
-namespace {
-
-// Passed as a callback to DownloadShelf paint functions. On toolkit-views
-// platforms it will mirror the position of the download progress, but that's
-// not done on Mac.
-void DummyRTLMirror(gfx::Rect* bounds) {
-}
-
-}  // namespace
-
 // This is a helper class to animate the fading out of the status text.
 @interface DownloadItemCellAnimation : NSAnimation {
  @private
@@ -140,7 +131,6 @@ void DummyRTLMirror(gfx::Rect* bounds) {
   isStatusTextVisible_ = NO;
   titleY_ = kPrimaryTextOnlyPosTop;
   statusAlpha_ = 0.0;
-  indeterminateProgressAngle_ = DownloadShelf::kStartAngleDegrees;
 
   [self setFont:[NSFont systemFontOfSize:
       [NSFont systemFontSizeForControlSize:NSSmallControlSize]]];
@@ -252,6 +242,7 @@ void DummyRTLMirror(gfx::Rect* bounds) {
         if (!indeterminateProgressTimer_) {
           indeterminateProgressTimer_.reset([[IndeterminateProgressTimer alloc]
               initWithDownloadItemCell:self]);
+          progressStartTime_ = base::TimeTicks::Now();
         }
       } else {
         percentDone_ = downloadModel->PercentComplete();
@@ -562,22 +553,24 @@ void DummyRTLMirror(gfx::Rect* bounds) {
 
     gfx::CanvasSkiaPaint canvas(dirtyRect, false);
     canvas.set_composite_alpha(true);
+    canvas.Translate(gfx::Vector2d(x, y));
+
     if (completionAnimation_.get()) {
       if ([completionAnimation_ isAnimating]) {
         if (percentDone_ == -1) {
           DownloadShelf::PaintDownloadComplete(
-              &canvas, base::Bind(&DummyRTLMirror), x, y,
+              &canvas, *[[[self controlView] window] themeProvider],
               [completionAnimation_ currentValue]);
         } else {
           DownloadShelf::PaintDownloadInterrupted(
-              &canvas, base::Bind(&DummyRTLMirror), x, y,
+              &canvas, *[[[self controlView] window] themeProvider],
               [completionAnimation_ currentValue]);
         }
       }
     } else if (percentDone_ >= 0 || indeterminateProgressTimer_) {
-      DownloadShelf::PaintDownloadProgress(&canvas, base::Bind(&DummyRTLMirror),
-                                           x, y, indeterminateProgressAngle_,
-                                           percentDone_);
+      DownloadShelf::PaintDownloadProgress(
+          &canvas, *[[[self controlView] window] themeProvider],
+          progressStartTime_, percentDone_);
     }
   }
 
@@ -689,9 +682,6 @@ void DummyRTLMirror(gfx::Rect* bounds) {
 }
 
 - (void)updateIndeterminateDownload {
-  indeterminateProgressAngle_ =
-      (indeterminateProgressAngle_ + DownloadShelf::kUnknownIncrementDegrees) %
-      DownloadShelf::kMaxDegrees;
   [[self controlView] setNeedsDisplay:YES];
 }