Set default SVG image font settings

Source/core/svg/graphics/SVGImage.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 409 matching lines @@
         // This will become an issue when SVGImage will be able to load other
         // SVGImage objects, but we're safe now, because SVGImage can only be
         // loaded by a top-level document.
         OwnPtrWillBeRawPtr<Page> page;
         {
             TRACE_EVENT0("blink", "SVGImage::dataChanged::createPage");
             page = adoptPtrWillBeNoop(new Page(pageClients));
             page->settings().setScriptEnabled(false);
             page->settings().setPluginsEnabled(false);
             page->settings().setAcceleratedCompositingEnabled(false);
+
+            // Because this page is detached, it can't get default font settings
+            // from the embedder. Copy over font settings so we have sensible
+            // defaults. These settings are fixed and will not update if changed.
+            if (!Page::ordinaryPages().isEmpty()) {
+                Settings& defaultSettings = (*Page::ordinaryPages().begin())->settings();
+                page->settings().genericFontFamilySettings() = defaultSettings.genericFontFamilySettings();
+                page->settings().setMinimumFontSize(defaultSettings.minimumFontSize());
+                page->settings().setMinimumLogicalFontSize(defaultSettings.minimumLogicalFontSize());
+                page->settings().setDefaultFontSize(defaultSettings.defaultFontSize());
+                page->settings().setDefaultFixedFontSize(defaultSettings.defaultFixedFontSize());
+            }
         }
 
         RefPtrWillBeRawPtr<LocalFrame> frame = nullptr;
         {
             TRACE_EVENT0("blink", "SVGImage::dataChanged::createFrame");
             frame = LocalFrame::create(dummyFrameLoaderClient, &page->frameHost(), 0);
             frame->setView(FrameView::create(frame.get()));
             frame->init();
         }
 
@@ skipping 16 matching lines @@
 
     return m_page;
 }
 
 String SVGImage::filenameExtension() const
 {
     return "svg";
 }
 
 }