Adding hooks for gathering total pixels painted and rasterized stats.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 9e723b5cc14f45f8ac68f62d6c46b406f2156fd9..bd72d3621cf28679228f76e34723a5f0050d13bb 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -666,6 +666,8 @@ void RenderWidget::PaintRect(const gfx::Rect& rect,
                              skia::PlatformCanvas* canvas) {
   TRACE_EVENT2("renderer", "PaintRect",
                "width", rect.width(), "height", rect.height());
+
+  base::TimeTicks rasterize_begin_ticks = base::TimeTicks::Now();

[nduca, 2012/11/06 21:30:53]

HighResNow

[hartmanng, 2012/11/06 21:53:16]

Done here and for the paint version of this.

   canvas->save();
 
   // Bring the canvas into the coordinate system of the paint rect.
@@ -744,6 +746,14 @@ void RenderWidget::PaintRect(const gfx::Rect& rect,
 
   PaintDebugBorder(rect, canvas);
   canvas->restore();
+
+  base::TimeDelta rasterize_time =
+      base::TimeTicks::Now() - rasterize_begin_ticks;
+  software_stats_.totalRasterizeTimeInSeconds += rasterize_time.InSecondsF();
+
+  int64 num_pixels_processed = rect.width() * rect.height();
+  software_stats_.totalPixelsPainted += num_pixels_processed;
+  software_stats_.totalPixelsRasterized += num_pixels_processed;
 }
 
 void RenderWidget::PaintDebugBorder(const gfx::Rect& rect,
@@ -1890,6 +1900,10 @@ void RenderWidget::GetRenderingStats(WebKit::WebRenderingStats& stats) const {
   stats.numAnimationFrames += software_stats_.numAnimationFrames;
   stats.numFramesSentToScreen += software_stats_.numFramesSentToScreen;
   stats.totalPaintTimeInSeconds += software_stats_.totalPaintTimeInSeconds;
+  stats.totalPixelsPainted += software_stats_.totalPixelsPainted;
+  stats.totalRasterizeTimeInSeconds +=
+      software_stats_.totalRasterizeTimeInSeconds;
+  stats.totalPixelsRasterized += software_stats_.totalPixelsRasterized;
 }
 
 bool RenderWidget::GetGpuRenderingStats(GpuRenderingStats* stats) const {