Implement a paint offset cache for slimming paint v2

Source/web/WebPluginContainerImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 100 matching lines @@
 
 void WebPluginContainerImpl::paint(GraphicsContext* context, const IntRect& rect)
 {
     if (!parent())
         return;
 
     // Don't paint anything if the plugin doesn't intersect.
     if (!frameRect().intersects(rect))
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, *m_element->layoutObject(), DisplayItem::Type::WebPlugin))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, *m_element->layoutObject(), DisplayItem::Type::WebPlugin, LayoutPoint()))
         return;
 
-    LayoutObjectDrawingRecorder drawingRecorder(*context, *m_element->layoutObject(), DisplayItem::Type::WebPlugin, rect);
+    LayoutObjectDrawingRecorder drawingRecorder(*context, *m_element->layoutObject(), DisplayItem::Type::WebPlugin, rect, LayoutPoint());
     context->save();
 
     ASSERT(parent()->isFrameView());
     FrameView* view =  toFrameView(parent());
 
     // The plugin is positioned in the root frame's coordinates, so it needs to
     // be painted in them too.
     IntPoint origin = view->contentsToRootFrame(IntPoint(0, 0));
     context->translate(static_cast<float>(-origin.x()), static_cast<float>(-origin.y()));
 
@@ skipping 201 matching lines @@
     return m_webPlugin->getPrintPresetOptionsFromDocument(presetOptions);
 }
 
 int WebPluginContainerImpl::printBegin(const WebPrintParams& printParams) const
 {
     return m_webPlugin->printBegin(printParams);
 }
 
 void WebPluginContainerImpl::printPage(int pageNumber, GraphicsContext* gc, const IntRect& printRect)
 {
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*gc, *m_element->layoutObject(), DisplayItem::Type::WebPlugin))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*gc, *m_element->layoutObject(), DisplayItem::Type::WebPlugin, LayoutPoint()))
         return;
 
-    LayoutObjectDrawingRecorder drawingRecorder(*gc, *m_element->layoutObject(), DisplayItem::Type::WebPlugin, printRect);
+    LayoutObjectDrawingRecorder drawingRecorder(*gc, *m_element->layoutObject(), DisplayItem::Type::WebPlugin, printRect, LayoutPoint());
     gc->save();
     WebCanvas* canvas = gc->canvas();
     m_webPlugin->printPage(pageNumber, canvas);
     gc->restore();
 }
 
 void WebPluginContainerImpl::printEnd()
 {
     m_webPlugin->printEnd();
 }
@@ skipping 600 matching lines @@
     clipRect.move(-windowRect.x(), -windowRect.y());
     unobscuredRect.move(-windowRect.x(), -windowRect.y());
 
     getPluginOcclusions(m_element, this->parent(), frameRect(), cutOutRects);
     // Convert to the plugin position.
     for (size_t i = 0; i < cutOutRects.size(); i++)
         cutOutRects[i].move(-frameRect().x(), -frameRect().y());
 }
 
 } // namespace blink