From 5dba0c6a2a55bfc0387d014c0c17bd9f57d4b9eb Mon Sep 17 00:00:00 2001
From: danakj <danakj@chromium.org>
Date: Wed, 4 Feb 2015 17:52:32 -0800
Subject: [PATCH] cc: Trace the viewport size changing.

This will help in tracking down window resize bugs.

R=enne, vmpstr
BUG=454333

Review URL: https://codereview.chromium.org/864713004

Cr-Commit-Position: refs/heads/master@{#314715}
---
 cc/trees/layer_tree_host_impl.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index ec062fb74718..b5509a7b5007 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -2195,6 +2195,10 @@ void LayerTreeHostImpl::ReleaseGL() {
 void LayerTreeHostImpl::SetViewportSize(const gfx::Size& device_viewport_size) {
   if (device_viewport_size == device_viewport_size_)
     return;
+  TRACE_EVENT_INSTANT2("cc", "LayerTreeHostImpl::SetViewportSize",
+                       TRACE_EVENT_SCOPE_THREAD, "width",
+                       device_viewport_size.width(), "height",
+                       device_viewport_size.height());
 
   if (pending_tree_)
     active_tree_->SetViewportSizeInvalid();
-- 
2.11.4.GIT