Fix incorrect print preview clipping

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 267 matching lines @@
 
  public:
   ChromePrintContext(LocalFrame* frame)
       : PrintContext(frame), m_printedPageWidth(0) {}
 
   ~ChromePrintContext() override {}
 
   virtual void begin(float width, float height) {
     DCHECK(!m_printedPageWidth);
     m_printedPageWidth = width;
+    m_printedPageHeight = height;
     PrintContext::begin(m_printedPageWidth, height);
   }
 
   virtual float getPageShrink(int pageNumber) const {
     IntRect pageRect = m_pageRects[pageNumber];
     return m_printedPageWidth / pageRect.width();
   }
 
   float spoolSinglePage(WebCanvas* canvas, int pageNumber) {
     dispatchEventsForPrintingOnAllFrames();
     if (!frame()->document() || frame()->document()->layoutViewItem().isNull())
       return 0;
 
     frame()->view()->updateAllLifecyclePhasesExceptPaint();
     if (!frame()->document() || frame()->document()->layoutViewItem().isNull())
       return 0;
 
-    IntRect pageRect = m_pageRects[pageNumber];
-    PaintRecordBuilder builder(pageRect, &canvas->getMetaData());
+    // The page rect gets scaled and translated, so specify the entire
+    // print content area here as the recording rect.
+    IntRect printedPageRect(0, 0, m_printedPageHeight, m_printedPageWidth);
+    PaintRecordBuilder builder(printedPageRect, &canvas->getMetaData());
     builder.context().setPrinting(true);
 
     float scale = spoolPage(builder, pageNumber);
     canvas->drawPicture(builder.endRecording());
     return scale;
   }
 
   void spoolAllPagesWithBoundaries(WebCanvas* canvas,
                                    const FloatSize& pageSizeInPixels) {
     dispatchEventsForPrintingOnAllFrames();
@@ skipping 102 matching lines @@
       if (currentFrame->isLocalFrame())
         documents.push_back(toLocalFrame(currentFrame)->document());
     }
 
     for (auto& doc : documents)
       doc->dispatchEventsForPrinting();
   }
 
   // Set when printing.
   float m_printedPageWidth;
+  float m_printedPageHeight;
 };
 
 // Simple class to override some of PrintContext behavior. This is used when
 // the frame hosts a plugin that supports custom printing. In this case, we
 // want to delegate all printing related calls to the plugin.
 class ChromePluginPrintContext final : public ChromePrintContext {
  public:
   ChromePluginPrintContext(LocalFrame* frame,
                            WebPluginContainerImpl* plugin,
                            const WebPrintParams& printParams)
@@ skipping 2021 matching lines @@
         createMarkup(startPosition, endPosition, AnnotateForInterchange,
                      ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs);
   } else {
     clipHtml =
         createMarkup(endPosition, startPosition, AnnotateForInterchange,
                      ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs);
   }
 }
 
 }  // namespace blink