ui::ContextFactory should not create SurfaceIdAllocators

ash/sysui/stub_context_factory.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 "ash/sysui/stub_context_factory.h"
 
 #include "base/memory/ptr_util.h"
 #include "cc/output/context_provider.h"
 #include "cc/raster/single_thread_task_graph_runner.h"
 #include "cc/surfaces/surface_id_allocator.h"
@@ skipping 53 matching lines @@
 }
 
 gpu::GpuMemoryBufferManager* StubContextFactory::GetGpuMemoryBufferManager() {
   return nullptr;
 }
 
 cc::TaskGraphRunner* StubContextFactory::GetTaskGraphRunner() {
   return task_graph_runner_.get();
 }
 
-std::unique_ptr<cc::SurfaceIdAllocator>
-StubContextFactory::CreateSurfaceIdAllocator() {
-  return base::WrapUnique(
-      new cc::SurfaceIdAllocator(next_surface_id_namespace_++));
+uint32_t StubContextFactory::AllocateSurfaceClientId() {
+  return next_surface_id_namespace_++;
 }
 
 cc::SurfaceManager* StubContextFactory::GetSurfaceManager() {
   // NOTIMPLEMENTED();
   return nullptr;
 }
 
 void StubContextFactory::ResizeDisplay(ui::Compositor* compositor,
                                        const gfx::Size& size) {}
 
 void StubContextFactory::SetDisplayColorSpace(
     ui::Compositor* compositor,
     const gfx::ColorSpace& color_space) {}
 
 }  // namespace sysui
 }  // namespace ash