cc: add rasterize time to continuous painting graph data in impl-side-painting

cc/layer_tree_host.cc

Index: cc/layer_tree_host.cc
diff --git a/cc/layer_tree_host.cc b/cc/layer_tree_host.cc
index cddb09b81af98e8601b39bce734ee684f9075e5b..531eab6e8d881d39896443e1291f641e40139440 100644
--- a/cc/layer_tree_host.cc
+++ b/cc/layer_tree_host.cc
@@ -322,7 +322,9 @@ void LayerTreeHost::finishCommitOnImplThread(LayerTreeHostImpl* hostImpl)
     hostImpl->setViewportSize(layoutViewportSize(), deviceViewportSize());
     hostImpl->setDeviceScaleFactor(deviceScaleFactor());
     hostImpl->setDebugState(m_debugState);
-    hostImpl->savePaintTime(m_renderingStats.totalPaintTime);
+
+    if (m_debugState.continuousPainting)
+        hostImpl->savePaintTime(m_renderingStats.totalPaintTime, commitNumber());
 
     if (newImplTreeHasNoEvictedResources) {
         if (syncTree->ContentsTexturesPurged())