cc/trees/layer_tree_host_impl.cc - Issue 375093002: Initial attempt at counting layers in the compositor thread.

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Unified Diff: cc/trees/layer_tree_host_impl.cc

Issue 375093002: Initial attempt at counting layers in the compositor thread. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Update comment in histograms.xml to say the stat is collected once per frame, before the frame is d… Created 6 years, 5 months ago

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Index: cc/trees/layer_tree_host_impl.cc

diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc

index 3b971912eb5e767ac1a2d745ded9fee18adfab61..fd0d1d33705358b45ce314d2e4b49c4cbb6193ff 100644

--- a/cc/trees/layer_tree_host_impl.cc

+++ b/cc/trees/layer_tree_host_impl.cc

@@ -1102,6 +1102,9 @@ DrawResult LayerTreeHostImpl::PrepareToDraw(FrameData* frame) {

}

need_to_update_visible_tiles_before_draw_ = true;

+ UMA_HISTOGRAM_CUSTOM_COUNTS(

+ "Compositing.NumActiveLayers", active_tree_->NumLayers(), 1, 400, 20);

bool ok = active_tree_->UpdateDrawProperties();

DCHECK(ok) << "UpdateDrawProperties failed during draw";

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