Rename ViewManagerService,ViewManagerClient -> ViewTree,ViewTreeClient

components/view_manager/public/cpp/BUILD.gn

 # Copyright 2014 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.
 
 import("//third_party/mojo/src/mojo/public/mojo_sdk.gni")
 
 mojo_sdk_source_set("cpp") {
   restrict_external_deps = false
   sources = [
     "args.h",
     "lib/args.cc",
     "lib/scoped_view_ptr.cc",
     "lib/view.cc",
-    "lib/view_manager_client_impl.cc",
-    "lib/view_manager_client_impl.h",
     "lib/view_manager_delegate.cc",
     "lib/view_manager_init.cc",
     "lib/view_observer.cc",
     "lib/view_private.cc",
     "lib/view_private.h",
+    "lib/view_tree_client_impl.cc",
+    "lib/view_tree_client_impl.h",
     "scoped_view_ptr.h",
     "view.h",
     "view_manager.h",
     "view_manager_delegate.h",
     "view_manager_init.h",
     "view_observer.h",
     "view_property.h",
     "view_tracker.cc",
     "view_tracker.h",
   ]
@@ skipping 20 matching lines @@
 }
 
 source_set("common") {
   sources = [
     "keys.cc",
     "keys.h",
     "types.h",
     "util.h",
   ]
 }