Downgrade some lifecycle update calls to not include paint if not necessary.

third_party/WebKit/Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 606 matching lines @@
     if (!m_host)
         return 0;
 
     double ratio = m_host->deviceScaleFactor();
     ratio *= pageZoomFactor();
     return ratio;
 }
 
 PassOwnPtr<DragImage> LocalFrame::nodeImage(Node& node)
 {
-    m_view->updateAllLifecyclePhases();
+    m_view->updateLifecycleToCompositingCleanPlusScrolling();
     LayoutObject* layoutObject = node.layoutObject();
     if (!layoutObject)
         return nullptr;
 
     // Paint starting at the nearest self painting layer, clipped to the object itself.
     // TODO(pdr): This will also paint the content behind the object if the object contains
     // transparency but the layer is opaque. We could directly call layoutObject->paint(...)
     // (see ObjectPainter::paintAllPhasesAtomically) but this would skip self-painting children.
     PaintLayer* layer = layoutObject->enclosingLayer()->enclosingSelfPaintingLayer();
     IntRect absoluteBoundingBox = layoutObject->absoluteBoundingBoxRectIncludingDescendants();
     FloatRect boundingBox = layer->layoutObject()->absoluteToLocalQuad(FloatQuad(absoluteBoundingBox), UseTransforms).boundingBox();
     DragImageBuilder dragImageBuilder(this, boundingBox, &node);
     {
         PaintLayerPaintingInfo paintingInfo(layer, LayoutRect(boundingBox), GlobalPaintFlattenCompositingLayers, LayoutSize(), 0);
         PaintLayerFlags flags = PaintLayerHaveTransparency | PaintLayerAppliedTransform | PaintLayerUncachedClipRects;
         PaintLayerPainter(*layer).paintLayer(dragImageBuilder.context(), paintingInfo, flags);
     }
     return dragImageBuilder.createImage();
 }
 
 PassOwnPtr<DragImage> LocalFrame::dragImageForSelection(float opacity)
 {
     if (!selection().isRange())
         return nullptr;
 
-    m_view->updateAllLifecyclePhases();
+    m_view->updateLifecycleToCompositingCleanPlusScrolling();
     ASSERT(document()->isActive());
 
     FloatRect paintingRect = FloatRect(selection().bounds());
     DragImageBuilder dragImageBuilder(this, paintingRect, nullptr, opacity);
     GlobalPaintFlags paintFlags = GlobalPaintSelectionOnly | GlobalPaintFlattenCompositingLayers;
     m_view->paintContents(dragImageBuilder.context(), paintFlags, enclosingIntRect(paintingRect));
     return dragImageBuilder.createImage();
 }
 
 String LocalFrame::selectedText() const
@@ skipping 204 matching lines @@
 {
     m_frame->disableNavigation();
 }
 
 FrameNavigationDisabler::~FrameNavigationDisabler()
 {
     m_frame->enableNavigation();
 }
 
 } // namespace blink