Mojo C++ bindings: remove some usage of AssociatedGroup from user code.

services/ui/ws/frame_generator.cc

 // Copyright 2016 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/ws/frame_generator.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/containers/adapters.h"
@@ skipping 27 matching lines @@
     compositor_frame_sink_->SetNeedsBeginFrame(true);
 }
 
 FrameGenerator::~FrameGenerator() {
   compositor_frame_sink_.reset();
 }
 
 void FrameGenerator::OnAcceleratedWidgetAvailable(
     gfx::AcceleratedWidget widget) {
   DCHECK_NE(gfx::kNullAcceleratedWidget, widget);
-  auto associated_group =
-      root_window_->delegate()->GetDisplayCompositorAssociatedGroup();
   cc::mojom::MojoCompositorFrameSinkAssociatedRequest sink_request =
-      mojo::MakeRequest(&compositor_frame_sink_, associated_group);
+      mojo::MakeRequest(&compositor_frame_sink_);
   cc::mojom::DisplayPrivateAssociatedRequest display_request =
-      mojo::MakeRequest(&display_private_, associated_group);
+      mojo::MakeRequest(&display_private_);
   root_window_->CreateDisplayCompositorFrameSink(
       widget, std::move(sink_request), binding_.CreateInterfacePtrAndBind(),
       std::move(display_request));
 }
 
 void FrameGenerator::OnSurfaceCreated(const cc::SurfaceInfo& surface_info) {
   DCHECK(surface_info.id().is_valid());
 
   // Only handle embedded surfaces changing here. The display root surface
   // changing is handled immediately after the CompositorFrame is submitted.
@@ skipping 114 matching lines @@
               0 /* sorting-context_id */);
   auto* quad = pass->CreateAndAppendDrawQuad<cc::SurfaceDrawQuad>();
   quad->SetAll(sqs, bounds_at_origin /* rect */, gfx::Rect() /* opaque_rect */,
                bounds_at_origin /* visible_rect */, true /* needs_blending*/,
                window_manager_surface_info_.id());
 }
 
 }  // namespace ws
 
 }  // namespace ui