Refactor MutatorHostClient from LayerTreeHost to LayerTree.

content/renderer/gpu/gpu_benchmarking_extension.cc

Index: content/renderer/gpu/gpu_benchmarking_extension.cc
diff --git a/content/renderer/gpu/gpu_benchmarking_extension.cc b/content/renderer/gpu/gpu_benchmarking_extension.cc
index ca42a1831fbcda4098536447fe9a2af09bdd2460..6fbc7e7b0ec29f2500d410f75c20f6a4e1fe5b50 100644
--- a/content/renderer/gpu/gpu_benchmarking_extension.cc
+++ b/content/renderer/gpu/gpu_benchmarking_extension.cc
@@ -17,7 +17,6 @@
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "cc/layers/layer.h"
-#include "cc/trees/layer_tree_host.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/input/synthetic_gesture_params.h"
 #include "content/common/input/synthetic_pinch_gesture_params.h"
@@ -126,7 +125,7 @@ class SkPictureSerializer {
   // Each layer in the tree is serialized into a separate skp file
   // in the given directory.
   void Serialize(const cc::Layer* root_layer) {
-    for (auto* layer : *root_layer->layer_tree_host()) {
+    for (auto* layer : *root_layer->GetLayerTree()) {
       sk_sp<SkPicture> picture = layer->GetPicture();
       if (!picture)
         continue;