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

content/renderer/shared_worker_repository.cc

Index: content/renderer/shared_worker_repository.cc
diff --git a/content/renderer/shared_worker_repository.cc b/content/renderer/shared_worker_repository.cc
index a883464f9b48580a28d376b9a6460e611d5d5f64..46dcb9151f27d834378a623977caf29c7aee256a 100644
--- a/content/renderer/shared_worker_repository.cc
+++ b/content/renderer/shared_worker_repository.cc
@@ -4,7 +4,7 @@
 
 #include "content/renderer/shared_worker_repository.h"
 
-#include "content/child/child_thread.h"
+#include "content/child/child_thread_impl.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/websharedworker_proxy.h"
@@ -39,7 +39,7 @@ SharedWorkerRepository::createSharedWorkerConnector(
   if (route_id == MSG_ROUTING_NONE)
     return NULL;
   documents_with_workers_.insert(document_id);
-  return new WebSharedWorkerProxy(ChildThread::current()->GetRouter(),
+  return new WebSharedWorkerProxy(ChildThreadImpl::current()->GetRouter(),
                                   document_id,
                                   route_id,
                                   params.render_frame_route_id);