Use the stateless GC::fillRect variant when possible.

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 327 matching lines @@
         frame()->view()->updateLayoutAndStyleForPainting();
 
         float pageHeight;
         computePageRects(FloatRect(FloatPoint(0, 0), pageSizeInPixels), 0, 0, 1, pageHeight);
 
         const float pageWidth = pageSizeInPixels.width();
         size_t numPages = pageRects().size();
         int totalHeight = numPages * (pageSizeInPixels.height() + 1) - 1;
 
         // Fill the whole background by white.
-        graphicsContext.setFillColor(Color::white);
-        graphicsContext.fillRect(FloatRect(0, 0, pageWidth, totalHeight));
+        graphicsContext.fillRect(FloatRect(0, 0, pageWidth, totalHeight), Color::white);
 
         int currentHeight = 0;
         for (size_t pageIndex = 0; pageIndex < numPages; pageIndex++) {
             // Draw a line for a page boundary if this isn't the first page.
             if (pageIndex > 0) {
                 graphicsContext.save();
                 graphicsContext.setStrokeColor(Color(0, 0, 255));
                 graphicsContext.setFillColor(Color(0, 0, 255));
                 graphicsContext.drawLine(IntPoint(0, currentHeight), IntPoint(pageWidth, currentHeight));
                 graphicsContext.restore();
@@ skipping 1569 matching lines @@
 
 void WebLocalFrameImpl::invalidateAll() const
 {
     ASSERT(frame() && frame()->view());
     FrameView* view = frame()->view();
     view->invalidateRect(view->frameRect());
     invalidateScrollbar();
 }
 
 } // namespace blink