aura-mus: wire up drag and drop.

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"
-#include "ui/aura/mus/os_exchange_data_provider_mus.h"
 #include "ui/aura/mus/property_converter.h"
 #include "ui/aura/mus/window_tree_client.h"
 #include "ui/aura/mus/window_tree_host_mus.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/views/mus/aura_init.h"
 #include "ui/views/mus/clipboard_mus.h"
 #include "ui/views/mus/desktop_window_tree_host_mus.h"
 #include "ui/views/mus/mus_property_mirror.h"
 #include "ui/views/mus/pointer_watcher_event_router.h"
@@ skipping 73 matching lines @@
   pointer_watcher_event_router_ =
       base::MakeUnique<PointerWatcherEventRouter>(window_tree_client_.get());
 
   screen_ = base::MakeUnique<ScreenMus>(this);
   screen_->Init(connector);
 
   std::unique_ptr<ClipboardMus> clipboard = base::MakeUnique<ClipboardMus>();
   clipboard->Init(connector);
   ui::Clipboard::SetClipboardForCurrentThread(std::move(clipboard));
 
-  ui::OSExchangeDataProviderFactory::SetFactory(this);
-
   ViewsDelegate::GetInstance()->set_native_widget_factory(
       base::Bind(&MusClient::CreateNativeWidget, base::Unretained(this)));
 }
 
 MusClient::~MusClient() {
   // ~WindowTreeClient calls back to us (we're its delegate), destroy it while
   // we are still valid.
   window_tree_client_.reset();
   ui::OSExchangeDataProviderFactory::SetFactory(nullptr);
   ui::Clipboard::DestroyClipboardForCurrentThread();
@@ skipping 163 matching lines @@
       continue;
     // 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;
 }
 
-std::unique_ptr<OSExchangeData::Provider> MusClient::BuildProvider() {
-  return base::MakeUnique<aura::OSExchangeDataProviderMus>();
-}
-
 }  // namespace views