Remove Tabpose feature on mac, and supporting infrastructure (PaintAtSize)

content/public/browser/notification_types.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
@@ skipping 161 matching lines @@
   NOTIFICATION_RENDER_WIDGET_HOST_HANG,
 
   // This is sent when a RenderWidgetHost is being destroyed. The source is
   // the RenderWidgetHost, the details are not used.
   NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
 
   // Sent after the backing store has been updated but before the widget has
   // painted. The source is the RenderWidgetHost, the details are not used.
   NOTIFICATION_RENDER_WIDGET_HOST_DID_UPDATE_BACKING_STORE,
 
-  // This notifies the observer that a PaintAtSizeACK was received. The source
-  // is the RenderWidgetHost, the details are an instance of
-  // std::pair<int, gfx::Size>.
-  NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_PAINT_AT_SIZE_ACK,
-
   // This notifies the observer that a HandleInputEventACK was received. The
   // source is the RenderWidgetHost, the details are the type of event
   // received.
   // Note: The RenderWidgetHost may be deallocated at this point.
   // Used only in testing.
   NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_INPUT_EVENT_ACK,
 
   // Sent from RenderViewHost::ClosePage.  The hosted RenderView has
   // processed the onbeforeunload handler and is about to be sent a
   // ViewMsg_ClosePage message to complete the tear-down process.  The source
@@ skipping 22 matching lines @@
   // the RenderViewHost, and the details is a DomOperationNotificationDetails.
   NOTIFICATION_DOM_OPERATION_RESPONSE,
 
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_