Mozart: Replace Set/Reset nomenclature with Set/Clear.

services/ui/launcher/launcher_view_tree.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "services/ui/launcher/launcher_view_tree.h"
 
 #include "base/bind.h"
 #include "mojo/public/cpp/application/connect.h"
 #include "mojo/services/gfx/composition/cpp/formatting.h"
 #include "mojo/services/ui/views/cpp/formatting.h"
@@ skipping 36 matching lines @@
   view_tree_->SetRenderer(renderer.Pass());
 }
 
 LauncherViewTree::~LauncherViewTree() {}
 
 void LauncherViewTree::SetRoot(mojo::ui::ViewOwnerPtr owner) {
   if (owner) {
     view_tree_->SetRoot(++root_key_, owner.Pass());
     root_was_set_ = true;
   } else {
-    view_tree_->ResetRoot(nullptr);
+    view_tree_->ClearRoot(nullptr);
     root_was_set_ = false;
   }
   root_layout_info_.reset();
 }
 
 void LauncherViewTree::SetViewportMetrics(
     mojo::ViewportMetricsPtr viewport_metrics) {
   viewport_metrics_ = viewport_metrics.Pass();
   view_tree_->RequestLayout();
 }
@@ skipping 63 matching lines @@
            << ", scene_token.value=" << info->scene_token->value;
 
   root_layout_info_ = info.Pass();
 }
 
 void LauncherViewTree::Shutdown() {
   shutdown_callback_.Run();
 }
 
 }  // namespace launcher