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

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Unified Diff: cc/trees/layer_tree_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_impl.cc

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

index 908e993d3ba845fcc3673c3538464f88f73a038a..bf0a99630d1a982253bd76b98c0b044c2f876973 100644

--- a/cc/trees/layer_tree_impl.cc

+++ b/cc/trees/layer_tree_impl.cc

@@ -561,6 +561,10 @@ void LayerTreeImpl::UnregisterLayer(LayerImpl* layer) {

layer_id_map_.erase(layer->id());

}

+size_t LayerTreeImpl::NumLayers() {

+ return layer_id_map_.size();

void LayerTreeImpl::PushPersistedState(LayerTreeImpl* pending_tree) {

pending_tree->SetCurrentlyScrollingLayer(

LayerTreeHostCommon::FindLayerInSubtree(pending_tree->root_layer(),

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