Fix reporting of Media.AcceleratedCompositingActive when false.

webkit/media/webmediaplayer_impl.cc

Index: webkit/media/webmediaplayer_impl.cc
diff --git a/webkit/media/webmediaplayer_impl.cc b/webkit/media/webmediaplayer_impl.cc
index f45cae406be7a3bb8bbbe8bcec8c851684232598..6b21eed5a1e082732bca158f878ba3cceae1fbef 100644
--- a/webkit/media/webmediaplayer_impl.cc
+++ b/webkit/media/webmediaplayer_impl.cc
@@ -501,6 +501,12 @@ void WebMediaPlayerImpl::paint(WebCanvas* canvas,
   DCHECK_EQ(main_loop_, MessageLoop::current());
   DCHECK(proxy_);
 
+  if (!accelerated_compositing_reported_) {
+    accelerated_compositing_reported_ = true;
+    UMA_HISTOGRAM_BOOLEAN("Media.AcceleratedCompositingActive",
+                          frame_->view()->isAcceleratedCompositingActive());

[Ami GONE FROM CHROMIUM, 2012/05/19 01:25:32]

Could also just use false here (and true at the other reporting site) instead of
frame_->view()->isAcceleratedCompositingActive() but figured it was better this
way.  Could be convinced.

[scherkus (not reviewing), 2012/05/19 02:09:31]

report false + comment w/ DCHECK to be safe and catch breakage should things
change?

[Ami GONE FROM CHROMIUM, 2012/05/19 02:48:24]

Done.

+  }
+
   proxy_->Paint(canvas, rect, alpha);
 }