cc: Plumbing for impl thread micro benchmarks

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 6c9ee0534528bc3867dc5895c2062124224300da..49b13cf7c98174d4d9e356b9fff809be5ab4ef33 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -100,14 +100,14 @@ LayerTreeHost::LayerTreeHost(
     LayerTreeHostClient* client,
     SharedBitmapManager* manager,
     const LayerTreeSettings& settings)
-    : next_ui_resource_id_(1),
+    : micro_benchmark_controller_(this),
+      next_ui_resource_id_(1),
       animating_(false),
       needs_full_tree_sync_(true),
       needs_filter_context_(false),
       client_(client),
       source_frame_number_(0),
       rendering_stats_instrumentation_(RenderingStatsInstrumentation::Create()),
-      micro_benchmark_controller_(this),
       output_surface_can_be_initialized_(true),
       output_surface_lost_(true),
       num_failed_recreate_attempts_(0),
@@ -425,6 +425,8 @@ void LayerTreeHost::FinishCommitOnImplThread(LayerTreeHostImpl* host_impl) {
     sync_tree->DidBecomeActive();
   }
 
+  micro_benchmark_controller_.ScheduleImplBenchmarks(host_impl);
+
   source_frame_number_++;
 }