Fix for 128506: Random Chinese/Japanese characters are missing in documents printed via the syst...

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
===================================================================
--- content/renderer/render_thread_impl.h	(revision 168878)
+++ content/renderer/render_thread_impl.h	(working copy)
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "base/observer_list.h"
+#include "base/string16.h"
 #include "base/timer.h"
 #include "build/build_config.h"
 #include "content/common/child_process.h"
@@ -239,6 +240,10 @@
   // first call.
   AudioRendererMixerManager* GetAudioRendererMixerManager();
 
+#if defined(OS_WIN)
+  void PreCacheFontCharacters(const LOGFONT& log_font, const string16& str);
+#endif
+
   // For producing custom V8 histograms. Custom histograms are produced if all
   // RenderViews share the same host, and the host is in the pre-specified set
   // of hosts we want to produce custom diagrams for. The name for a custom