Separate RenderView from RenderWidget, part 4: Painting calls in the delegate.

content/renderer/render_widget_owner_delegate.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_OWNER_DELEGATE_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_OWNER_DELEGATE_H_
 
 #include "content/common/content_export.h"
 
 namespace blink {
@@ skipping 22 matching lines @@
   // As in RenderWidgetInputHandlerDelegate.
   virtual void RenderWidgetFocusChangeComplete() = 0;
   virtual bool DoesRenderWidgetHaveTouchEventHandlersAt(
       const gfx::Point& point) const = 0;
   virtual void RenderWidgetDidHandleKeyEvent() = 0;
   virtual bool RenderWidgetWillHandleGestureEvent(
       const blink::WebGestureEvent& event) = 0;
   virtual bool RenderWidgetWillHandleMouseEvent(
       const blink::WebMouseEvent& event) = 0;
 
+  // Painting notifications. RenderWidgetDidCommitAndDrawCompositorFrame happens
+  // when that has completed, and subsequent rendering won't affect the painted
+  // content. DidFlushPaint happens once we've received the ACK that the screen
+  // has been updated. For a given paint operation, these overrides will always
+  // be called in the order RenderWidgetDidCommitAndDrawCompositorFrame,
+  // RenderWidgetDidFlushPaint.
+  virtual void RenderWidgetDidCommitAndDrawCompositorFrame() = 0;
+  virtual void RenderWidgetDidFlushPaint() = 0;
+
  protected:
   virtual ~RenderWidgetOwnerDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_OWNER_DELEGATE_H_