Moves OSExchangeDataProviderMus to aura/mus

ui/views/mus/drag_drop_client_mus.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/drag_drop_client_mus.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "services/ui/public/cpp/window.h"
+#include "ui/aura/mus/os_exchange_data_provider_mus.h"
 #include "ui/aura/window.h"
-#include "ui/views/mus/os_exchange_data_provider_mus.h"
 
 namespace views {
 namespace {
 
 DragDropClientMus* current_dragging_client = nullptr;
 
 }  // namespace
 
 DragDropClientMus::DragDropClientMus(ui::Window* ui_window)
     : ui_window_(ui_window) {}
 
 DragDropClientMus::~DragDropClientMus() {}
 
 int DragDropClientMus::StartDragAndDrop(
     const ui::OSExchangeData& data,
     aura::Window* root_window,
     aura::Window* source_window,
     const gfx::Point& screen_location,
     int drag_operations,
     ui::DragDropTypes::DragEventSource source) {
   std::map<std::string, std::vector<uint8_t>> drag_data =
-      static_cast<const OSExchangeDataProviderMus&>(data.provider()).GetData();
+      static_cast<const aura::OSExchangeDataProviderMus&>(data.provider())
+          .GetData();
 
   // TODO(erg): Right now, I'm passing the cursor_location, but maybe I want to
   // pass OSExchangeData::GetDragImageOffset() instead?
 
   bool success = false;
   gfx::Point cursor_location = screen_location;
   uint32_t action_taken = ui::mojom::kDropEffectNone;
   current_dragging_client = this;
   ui_window_->PerformDragDrop(
       drag_data, drag_operations, cursor_location,
@@ skipping 35 matching lines @@
 void DragDropClientMus::OnMoveLoopEnd(bool* out_success,
                                       uint32_t* out_action,
                                       bool in_success,
                                       uint32_t in_action) {
   *out_success = in_success;
   *out_action = in_action;
   runloop_quit_closure_.Run();
 }
 
 }  // namespace views