Change mojo geometry structs from using type converters to StructTraits.

components/mus/ws/window_manager_state.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 "components/mus/ws/window_manager_state.h"
 
 #include <queue>
 
 #include "base/memory/weak_ptr.h"
 #include "components/mus/common/event_matcher_util.h"
@@ skipping 127 matching lines @@
 }
 
 void WindowManagerState::AddSystemModalWindow(ServerWindow* window) {
   DCHECK(!window->transient_parent());
   event_dispatcher_.AddSystemModalWindow(window);
 }
 
 mojom::DisplayPtr WindowManagerState::ToMojomDisplay() const {
   mojom::DisplayPtr display_ptr = display_->ToMojomDisplay();
   // TODO(sky): set work area.
-  display_ptr->work_area = display_ptr->bounds.Clone();
+  display_ptr->work_area = display_ptr->bounds;
   display_ptr->frame_decoration_values = frame_decoration_values_.Clone();
   return display_ptr;
 }
 
 void WindowManagerState::OnWillDestroyTree(WindowTree* tree) {
   if (tree_awaiting_input_ack_ != tree)
     return;
   // The WindowTree is dying. So it's not going to ack the event.
   // If the dying tree matches the root |tree_| marked as handled so we don't
   // notify it of accelerators.
   OnEventAck(tree_awaiting_input_ack_, tree == tree_
                                            ? mojom::EventResult::HANDLED
                                            : mojom::EventResult::UNHANDLED);
 }
 
 WindowManagerState::WindowManagerState(Display* display,
                                        PlatformDisplay* platform_display,
                                        bool is_user_id_valid,
                                        const UserId& user_id)
     : display_(display),
       platform_display_(platform_display),
       is_user_id_valid_(is_user_id_valid),
       user_id_(user_id),
       event_dispatcher_(this),
       weak_factory_(this) {
   frame_decoration_values_ = mojom::FrameDecorationValues::New();
-  frame_decoration_values_->normal_client_area_insets = mojo::Insets::New();
-  frame_decoration_values_->maximized_client_area_insets = mojo::Insets::New();
   frame_decoration_values_->max_title_bar_button_width = 0u;
 
   root_.reset(window_server()->CreateServerWindow(
       window_server()->display_manager()->GetAndAdvanceNextRootId(),
       ServerWindow::Properties()));
   // Our root is always a child of the Display's root. Do this
   // before the WindowTree has been created so that the client doesn't get
   // notified of the add, bounds change and visibility change.
   root_->SetBounds(gfx::Rect(display->root_window()->bounds().size()));
   root_->SetVisible(true);
@@ skipping 235 matching lines @@
                                  weak_accelerator);
 }
 
 void WindowManagerState::OnEventTargetNotFound(const ui::Event& event) {
   window_server()->SendToEventObservers(event, user_id_,
                                         nullptr /* ignore_tree */);
 }
 
 }  // namespace ws
 }  // namespace mus