cc: Add LayerTreeHost::InitParams for LayerTreeHost creation.

ui/compositor/compositor.cc

Index: ui/compositor/compositor.cc
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc
index b8a58eec2129a39fded5832fd008a9f8e8dca2ee..f80b75fe298d605fc960165d0c257b4659733907 100644
--- a/ui/compositor/compositor.cc
+++ b/ui/compositor/compositor.cc
@@ -140,10 +140,16 @@ Compositor::Compositor(gfx::AcceleratedWidget widget,
       command_line->HasSwitch(switches::kUIEnableCompositorAnimationTimelines);
 
   base::TimeTicks before_create = base::TimeTicks::Now();
-  host_ = cc::LayerTreeHost::CreateSingleThreaded(
-      this, this, context_factory_->GetSharedBitmapManager(),
-      context_factory_->GetGpuMemoryBufferManager(),
-      context_factory_->GetTaskGraphRunner(), settings, task_runner_, nullptr);
+
+  cc::LayerTreeHost::InitParams params;
+  params.client = this;
+  params.shared_bitmap_manager = context_factory_->GetSharedBitmapManager();
+  params.gpu_memory_buffer_manager =
+      context_factory_->GetGpuMemoryBufferManager();
+  params.task_graph_runner = context_factory_->GetTaskGraphRunner();
+  params.settings = &settings;
+  params.main_task_runner = task_runner_;
+  host_ = cc::LayerTreeHost::CreateSingleThreaded(this, &params);
   UMA_HISTOGRAM_TIMES("GPU.CreateBrowserCompositor",
                       base::TimeTicks::Now() - before_create);
   host_->SetRootLayer(root_web_layer_);