Improved measurement of rasterize time and pixels rasterized.

 - Reporting minimum rasterize time out of multiple runs excludes
   time when the raster thread is de-scheduled and it excludes cache effects.
   In order for this to work reliably, slow-down-raster-scale-factor needs to
   be set to a large value (e.g. 100).
 - Fixed computation of number of pixels rasterized to use the intersection
   of content_clip and canvas_rect, instead of content_clip.
 - The improved measurements are designed for a new rasterize and paint
   benchmark that will be committed in a spearate CL.
- Separated paint time (direct rasterization without prior recording to an SkPicture) from record time
    
BUG=226489

Review URL: https://chromiumcodereview.appspot.com/13933035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@196751 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 7 deletions

diff --git a/cc/resources/content_layer_updater.cc b/cc/resources/content_layer_updater.cc
index 9607ec6..e267398 100644
--- a/cc/resources/content_layer_updater.cc
+++ b/cc/resources/content_layer_updater.cc
@@ -56,14 +56,7 @@ void ContentLayerUpdater::PaintContents(SkCanvas* canvas,
   canvas->clipRect(layer_sk_rect);
 
   gfx::RectF opaque_layer_rect;
-  base::TimeTicks paint_begin_time;
-  if (stats)
-    paint_begin_time = base::TimeTicks::Now();
   painter_->Paint(canvas, layer_rect, &opaque_layer_rect);
-  if (stats) {
-    stats->total_paint_time += base::TimeTicks::Now() - paint_begin_time;
-    stats->total_pixels_painted += content_rect.width() * content_rect.height();
-  }
   canvas->restore();
 
   gfx::RectF opaque_content_rect = gfx::ScaleRect(