Oilpan: Ensure that classes with virtual trace methods always have vtables for their left-most base…

Source/core/css/RemoteFontFaceSource.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/css/RemoteFontFaceSource.h"
 
 #include "core/css/CSSCustomFontData.h"
 #include "core/css/CSSFontFace.h"
 #include "core/css/FontLoader.h"
@@ skipping 117 matching lines @@
 
 bool RemoteFontFaceSource::ensureFontData()
 {
     return m_font->ensureCustomFontData();
 }
 
 void RemoteFontFaceSource::trace(Visitor* visitor)
 {
     visitor->trace(m_fontLoader);
     CSSFontFaceSource::trace(visitor);
+    FontResourceClient::trace(visitor);
 }
 
 void RemoteFontFaceSource::FontLoadHistograms::loadStarted()
 {
     if (!m_loadStartTime)
         m_loadStartTime = currentTimeMS();
 }
 
 void RemoteFontFaceSource::FontLoadHistograms::fallbackFontPainted()
 {
@@ skipping 40 matching lines @@
     if (size < 50 * 1024)
         return "WebFont.DownloadTime.1.10KBTo50KB";
     if (size < 100 * 1024)
         return "WebFont.DownloadTime.2.50KBTo100KB";
     if (size < 1024 * 1024)
         return "WebFont.DownloadTime.3.100KBTo1MB";
     return "WebFont.DownloadTime.4.Over1MB";
 }
 
 } // namespace blink