Implements PrintBrowser mode.

third_party/WebKit/Source/core/frame/FrameView.h

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
    reserved.
 
    This library is free software; you can redistribute it and/or
@@ skipping 71 matching lines @@
 class LayoutBox;
 class LayoutEmbeddedObject;
 class LayoutObject;
 class LayoutReplaced;
 class LayoutScrollbarPart;
 class LayoutView;
 class PaintArtifactCompositor;
 class PaintController;
 class PaintInvalidationState;
 class Page;
+class PrintContext;
 class ScrollingCoordinator;
 class TracedValue;
 class TransformState;
 struct AnnotatedRegionValue;
 struct CompositedSelection;
 
 typedef unsigned long long DOMTimeStamp;
 
 class CORE_EXPORT FrameView final
     : public Widget,
@@ skipping 779 matching lines @@
     Scrollbar* createScrollbar(ScrollbarOrientation) override;
 
    protected:
     void destroyScrollbar(ScrollbarOrientation) override;
   };
 
   void updateScrollOffset(const ScrollOffset&, ScrollType) override;
 
   void updateScrollbarEnabledState();
 
+  void dispatchEventsForPrintingOnAllFrames();
+
+  void setupPrintContext();
+  void clearPrintContext();
+
   void updateLifecyclePhasesInternal(
       DocumentLifecycle::LifecycleState targetState);
 
   void invalidateTreeIfNeededRecursive();
   void scrollContentsIfNeededRecursive();
   void updateStyleAndLayoutIfNeededRecursive();
   void prePaint();
   void paintTree();
   void paintGraphicsLayerRecursively(GraphicsLayer*);
 
@@ skipping 294 matching lines @@
   // due to layout object properties. e.g. opacity, transform.
   // The size of the vector depends on the number of
   // main thread scrolling reasons.
   Vector<int> m_mainThreadScrollingReasonsCounter;
 
   // TODO(kenrb): Remove these when https://crbug.com/680606 is resolved.
   std::unique_ptr<CompositorAnimationTimeline> m_animationTimeline;
   std::unique_ptr<CompositorAnimationHost> m_animationHost;
 
   std::unique_ptr<GeometryMapper> m_geometryMapper;
+
+  Member<PrintContext> m_printContext;
 };
 
 inline void FrameView::incrementVisuallyNonEmptyCharacterCount(unsigned count) {
   if (m_isVisuallyNonEmpty)
     return;
   m_visuallyNonEmptyCharacterCount += count;
   // Use a threshold value to prevent very small amounts of visible content from
   // triggering didMeaningfulLayout.  The first few hundred characters rarely
   // contain the interesting content of the page.
   static const unsigned visualCharacterThreshold = 200;
@@ skipping 20 matching lines @@
                   widget.isFrameView());
 DEFINE_TYPE_CASTS(FrameView,
                   ScrollableArea,
                   scrollableArea,
                   scrollableArea->isFrameView(),
                   scrollableArea.isFrameView());
 
 }  // namespace blink
 
 #endif  // FrameView_h