services/ui: Remove deprecated gpu code

ui/views/mus/native_widget_mus.cc

Index: ui/views/mus/native_widget_mus.cc
diff --git a/ui/views/mus/native_widget_mus.cc b/ui/views/mus/native_widget_mus.cc
index fd0053245c0114eaa977ad27809d83d5800a39d6..9f76938562a79353577dc99f8454a6d450515f3e 100644
--- a/ui/views/mus/native_widget_mus.cc
+++ b/ui/views/mus/native_widget_mus.cc
@@ -10,7 +10,6 @@
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "services/ui/common/gpu_service.h"
-#include "services/ui/public/cpp/bitmap_uploader.h"
 #include "services/ui/public/cpp/property_type_converters.h"
 #include "services/ui/public/cpp/window.h"
 #include "services/ui/public/cpp/window_observer.h"
@@ -28,7 +27,6 @@
 #include "ui/aura/window.h"
 #include "ui/aura/window_property.h"
 #include "ui/base/hit_test.h"
-#include "ui/base/view_prop.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/events/event.h"
@@ -529,29 +527,13 @@ NativeWidgetMus::NativeWidgetMus(internal::NativeWidgetDelegate* delegate,
   // picked up.
   ui::ContextFactory* default_context_factory =
       aura::Env::GetInstance()->context_factory();
-  // For Chrome, we need the GpuProcessTransportFactory so that renderer and
-  // browser pixels are composited into a single backing SoftwareOutputDeviceMus
-  // (which also requires the BitmapUploader).
-  bool needs_bitmap_uploader = false;
   if (!default_context_factory) {
     context_factory_.reset(
         new SurfaceContextFactory(connector, window_, surface_type_));
     aura::Env::GetInstance()->set_context_factory(context_factory_.get());
-  } else if (!ui::GpuService::UseChromeGpuCommandBuffer()) {
-    // Only use the BitmapUploader when the mojo command buffer is being used.
-    needs_bitmap_uploader = true;
   }
 
   window_tree_host_.reset(new WindowTreeHostMus(this, window_));
-  if (needs_bitmap_uploader) {
-    bitmap_uploader_.reset(new ui::BitmapUploader(window));
-    bitmap_uploader_->Init(connector);
-    prop_ = base::MakeUnique<ui::ViewProp>(
-        window_tree_host_->GetAcceleratedWidget(),
-        ui::kBitmapUploaderForAcceleratedWidget,
-        bitmap_uploader_.get());
-  }
-
   aura::Env::GetInstance()->set_context_factory(default_context_factory);
 }