Track the cost of impl-side painting.

cc/picture_pile.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 
+#include "base/time.h"
 #include "cc/picture_pile.h"
 #include "cc/picture_pile_impl.h"
+#include "cc/rendering_stats.h"
 
 namespace cc {
 
 PicturePile::PicturePile() {
 }
 
 PicturePile::~PicturePile() {
 }
 
 class OutOfBoundsPredicate {
@@ skipping 12 matching lines @@
     pile_.erase(std::remove_if(pile_.begin(), pile_.end(), oob), pile_.end());
   }
 
   size_ = size;
 }
 
 void PicturePile::Update(
     ContentLayerClient* painter,
     const Region&,
     RenderingStats& stats) {
+  base::TimeTicks paintBeginTime = base::TimeTicks::Now();
+
   // TODO(enne): Add things to the pile, consolidate if needed, etc...
   // TODO(enne): Only re-record invalidated areas.
   // TODO(enne): Also re-record areas that have been newly exposed by resize.
 
   // Always re-record the entire layer into a single picture, just to get
   // this class up and running.
   pile_.clear();
   pile_.push_back(Picture::Create());
   pile_[0]->Record(painter, gfx::Rect(gfx::Point(), size_), stats);
+
+  stats.totalPaintTimeInSeconds += (base::TimeTicks::Now() -

[nduca, 2012/11/29 18:16:30]

Lets move this into accounting Picture::Record

[Tom Hudson, 2012/11/29 19:16:11]

D'oh! Picture::Record already does it, so this was double-counting.

+                                    paintBeginTime).InSecondsF();

[nduca, 2012/11/29 18:16:30]

i think we also need to track the number of pixels recorded...

[Tom Hudson, 2012/11/29 19:16:11]

Done.

 }
 
 void PicturePile::PushPropertiesTo(PicturePileImpl* other) {
   other->pile_.resize(pile_.size());
   for (size_t i = 0; i < pile_.size(); ++i)
     other->pile_[i] = pile_[i];
 }
 
 }  // namespace cc