Add machinery to show touch editing context menus in OOPIFs.

content/browser/renderer_host/input/touch_selection_controller_client_child_frame.cc

 // Copyright 2017 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 "content/browser/renderer_host/input/touch_selection_controller_client_child_frame.h"
 
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
 #include "content/browser/renderer_host/input/touch_selection_controller_client_manager.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
@@ skipping 169 matching lines @@
 
 void TouchSelectionControllerClientChildFrame::RunContextMenu() {
   gfx::RectF anchor_rect =
       manager_->GetTouchSelectionController()->GetRectBetweenBounds();
   gfx::PointF anchor_point =
       gfx::PointF(anchor_rect.CenterPoint().x(), anchor_rect.y());
   gfx::Point origin = rwhv_->GetViewOriginInRoot();
   anchor_point.Offset(-origin.x(), -origin.y());
   RenderWidgetHostImpl* host =
       RenderWidgetHostImpl::From(rwhv_->GetRenderWidgetHost());
-  // TODO(wjmaclean): Probably this ViewMsg should be converted to a FrameMsg
-  // since it will need to go to a RenderFrame once the Blink-side plumbing for
-  // this is hooked up.
   host->Send(new ViewMsg_ShowContextMenu(host->GetRoutingID(),
                                          ui::MENU_SOURCE_TOUCH_EDIT_MENU,
                                          gfx::ToRoundedPoint(anchor_point)));
 
   // Hide selection handles after getting rect-between-bounds from touch
   // selection controller; otherwise, rect would be empty and the above
   // calculations would be invalid.
   manager_->GetTouchSelectionController()
       ->HideAndDisallowShowingAutomatically();
 }
 
 }  // namespace content