Revert of Mandoline UI Process: Update namespaces and file names

components/html_viewer/ax_provider_apptest.cc

Index: components/html_viewer/ax_provider_apptest.cc
diff --git a/components/html_viewer/ax_provider_apptest.cc b/components/html_viewer/ax_provider_apptest.cc
index 5c35485ad2b716fa55dc1629ec3a353c3414d372..5068fa260f900e9ffdbd227c7b525af16ab18d15 100644
--- a/components/html_viewer/ax_provider_apptest.cc
+++ b/components/html_viewer/ax_provider_apptest.cc
@@ -62,7 +62,7 @@
 
 }  // namespace
 
-using AXProviderTest = mus::ViewManagerTestBase;
+using AXProviderTest = ViewManagerTestBase;
 
 TEST_F(AXProviderTest, HelloWorld) {
   // Start a test server for net/data/test.html access.
@@ -82,7 +82,7 @@
   // Embed the html_viewer in a View.
   ViewTreeClientPtr tree_client;
   connection->ConnectToService(&tree_client);
-  mus::View* embed_view = window_manager()->CreateView();
+  View* embed_view = window_manager()->CreateView();
   embed_view->Embed(tree_client.Pass());
 
   TestFrameTreeServer frame_tree_server;