Setup DiscardableMemory in the ash process

ui/views/mus/mus_client.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 "ui/views/mus/mus_client.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/threading/thread.h"
-#include "components/discardable_memory/client/client_discardable_shared_memory_manager.h"
 #include "services/service_manager/public/cpp/connection.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/ui/public/cpp/gpu/gpu.h"
 #include "services/ui/public/cpp/property_type_converters.h"
 #include "services/ui/public/interfaces/constants.mojom.h"
 #include "services/ui/public/interfaces/event_matcher.mojom.h"
 #include "services/ui/public/interfaces/window_manager.mojom.h"
 #include "ui/aura/env.h"
 #include "ui/aura/mus/capture_synchronizer.h"
 #include "ui/aura/mus/mus_context_factory.h"
@@ skipping 58 matching lines @@
   // TODO(msw): Avoid this... use some default value? Allow clients to extend?
   property_converter_ = base::MakeUnique<aura::PropertyConverter>();
   property_converter_->RegisterProperty(
       wm::kShadowElevationKey,
       ui::mojom::WindowManager::kShadowElevation_Property,
       base::Bind(&wm::IsValidShadowElevation));
 
   if (create_wm_state)
     wm_state_ = base::MakeUnique<wm::WMState>();
 
-  discardable_memory::mojom::DiscardableSharedMemoryManagerPtr manager_ptr;
-  connector->BindInterface(ui::mojom::kServiceName, &manager_ptr);
-
-  discardable_shared_memory_manager_ = base::MakeUnique<
-      discardable_memory::ClientDiscardableSharedMemoryManager>(
-      std::move(manager_ptr), io_task_runner);
-  base::DiscardableMemoryAllocator::SetInstance(
-      discardable_shared_memory_manager_.get());
-
   window_tree_client_ = base::MakeUnique<aura::WindowTreeClient>(
       connector, this, nullptr /* window_manager_delegate */,
       nullptr /* window_tree_client_request */, std::move(io_task_runner));
   aura::Env::GetInstance()->SetWindowTreeClient(window_tree_client_.get());
   window_tree_client_->ConnectViaWindowTreeFactory();
 
   pointer_watcher_event_router_ =
       base::MakeUnique<PointerWatcherEventRouter>(window_tree_client_.get());
 
   screen_ = base::MakeUnique<ScreenMus>(this);
@@ skipping 12 matching lines @@
   // we are still valid.
   window_tree_client_.reset();
   ui::OSExchangeDataProviderFactory::SetFactory(nullptr);
   ui::Clipboard::DestroyClipboardForCurrentThread();
 
   if (ViewsDelegate::GetInstance()) {
     ViewsDelegate::GetInstance()->set_native_widget_factory(
         ViewsDelegate::NativeWidgetFactory());
   }
 
-  base::DiscardableMemoryAllocator::SetInstance(nullptr);
   DCHECK_EQ(instance_, this);
   instance_ = nullptr;
   DCHECK(aura::Env::GetInstance());
 }
 
 // static
 bool MusClient::ShouldCreateDesktopNativeWidgetAura(
     const Widget::InitParams& init_params) {
   // TYPE_CONTROL and child widgets require a NativeWidgetAura.
   return init_params.type != Widget::InitParams::TYPE_CONTROL &&
@@ skipping 147 matching lines @@
     // TODO: this likely gets z-order wrong. http://crbug.com/663606.
     gfx::Point relative_point(point);
     window_tree_host->ConvertScreenInPixelsToDIP(&relative_point);
     if (gfx::Rect(root->bounds().size()).Contains(relative_point))
       return root->GetTopWindowContainingPoint(relative_point);
   }
   return nullptr;
 }
 
 }  // namespace views