Unify the three places that patch font loading for PDFium on Windows.

content/utility/utility_thread_impl.cc

Index: content/utility/utility_thread_impl.cc
diff --git a/content/utility/utility_thread_impl.cc b/content/utility/utility_thread_impl.cc
index 32f9814ee032ffa15256d7fc4a1eac94d56d2b9a..26af2b17a06ae523c4e7c01d755698731fc631c4 100644
--- a/content/utility/utility_thread_impl.cc
+++ b/content/utility/utility_thread_impl.cc
@@ -40,7 +40,7 @@ UtilityThreadImpl::UtilityThreadImpl() : single_process_(false) {
 }
 
 UtilityThreadImpl::UtilityThreadImpl(const std::string& channel_name)
-    : ChildThread(Options(channel_name, false)),
+    : ChildThreadImpl(Options(channel_name, false)),
       single_process_(true) {
   Init();
 }
@@ -49,16 +49,12 @@ UtilityThreadImpl::~UtilityThreadImpl() {
 }
 
 void UtilityThreadImpl::Shutdown() {
-  ChildThread::Shutdown();
+  ChildThreadImpl::Shutdown();
 
   if (!single_process_)
     blink::shutdown();
 }
 
-bool UtilityThreadImpl::Send(IPC::Message* msg) {
-  return ChildThread::Send(msg);
-}
-
 void UtilityThreadImpl::ReleaseProcessIfNeeded() {
   if (batch_mode_)
     return;
@@ -74,18 +70,6 @@ void UtilityThreadImpl::ReleaseProcessIfNeeded() {
   }
 }
 
-#if defined(OS_WIN)
-
-void UtilityThreadImpl::PreCacheFont(const LOGFONT& log_font) {
-  Send(new ChildProcessHostMsg_PreCacheFont(log_font));
-}
-
-void UtilityThreadImpl::ReleaseCachedFonts() {
-  Send(new ChildProcessHostMsg_ReleaseCachedFonts());
-}
-
-#endif  // OS_WIN
-
 void UtilityThreadImpl::Init() {
   batch_mode_ = false;
   ChildProcess::current()->AddRefProcess();