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

content/renderer/renderer_main_platform_delegate_win.cc

Index: content/renderer/renderer_main_platform_delegate_win.cc
===================================================================
--- content/renderer/renderer_main_platform_delegate_win.cc	(revision 158204)
+++ content/renderer/renderer_main_platform_delegate_win.cc	(working copy)
@@ -5,6 +5,7 @@
 #include "content/renderer/renderer_main_platform_delegate.h"
 
 #include <signal.h>
+#include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ -13,6 +14,7 @@
 #include "content/public/common/content_switches.h"
 #include "content/public/common/injection_test_win.h"
 #include "content/public/renderer/render_thread.h"
+#include "content/renderer/render_thread_impl.h"
 #include "sandbox/win/src/sandbox.h"
 #include "skia/ext/skia_sandbox_support_win.h"
 #include "unicode/timezone.h"
@@ -27,6 +29,17 @@
   }
 }
 
+// Windows-only skia sandbox support
+void SkiaPreCacheFontCharacters(const LOGFONT& logfont,
+                                const wchar_t* text,
+                                unsigned int text_length) {
+  RenderThreadImpl* render_thread_impl = RenderThreadImpl::current();
+  if (render_thread_impl) {
+    render_thread_impl->PreCacheFontCharacters(logfont,
+                                               std::wstring(text, text_length));
+  }
+}
+
 void __cdecl ForceCrashOnSigAbort(int) {
   *((int*)0) = 0x1337;
 }
@@ -77,6 +90,7 @@
     // is disabled, we don't have to make this dummy call.
     scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
     SetSkiaEnsureTypefaceAccessible(SkiaPreCacheFont);
+    SetSkiaEnsureTypefaceCharactersAccessible(SkiaPreCacheFontCharacters);
   }
 }