cc: Add LayerTreeHost::InitParams for LayerTreeHost creation.

cc/trees/layer_tree_host_unittest_no_message_loop.cc

Index: cc/trees/layer_tree_host_unittest_no_message_loop.cc
diff --git a/cc/trees/layer_tree_host_unittest_no_message_loop.cc b/cc/trees/layer_tree_host_unittest_no_message_loop.cc
index 0b68ffb22630eca9b761b49f68d6e2a4b38f7228..ef948f70240281e52d786ac77921db06cef0ecf2 100644
--- a/cc/trees/layer_tree_host_unittest_no_message_loop.cc
+++ b/cc/trees/layer_tree_host_unittest_no_message_loop.cc
@@ -105,8 +105,11 @@ class LayerTreeHostNoMessageLoopTest
     settings.single_thread_proxy_scheduler = false;
     settings.verify_property_trees = true;
     settings.raster_enabled = false;
-    layer_tree_host_ = LayerTreeHost::CreateSingleThreaded(
-        this, this, nullptr, nullptr, nullptr, settings, nullptr, nullptr);
+
+    LayerTreeHost::InitParams params;
+    params.client = this;
+    params.settings = &settings;
+    layer_tree_host_ = LayerTreeHost::CreateSingleThreaded(this, &params);
     layer_tree_host_->SetViewportSize(size_);
     layer_tree_host_->SetRootLayer(root_layer_);
   }