Remove unused in-process pepper APIs

ppapi/proxy/resource_creation_proxy.cc

Index: ppapi/proxy/resource_creation_proxy.cc
diff --git a/ppapi/proxy/resource_creation_proxy.cc b/ppapi/proxy/resource_creation_proxy.cc
index e20eb9df203542abe7a263f8e5c1b07936a3ddee..aa522ee01393bcb8ab13ec7f47ad25f492899f95 100644
--- a/ppapi/proxy/resource_creation_proxy.cc
+++ b/ppapi/proxy/resource_creation_proxy.cc
@@ -469,12 +469,6 @@ PP_Resource ResourceCreationProxy::CreatePlatformVerificationPrivate(
       GetReference();
 }
 
-PP_Resource ResourceCreationProxy::CreateScrollbar(PP_Instance instance,
-                                                   PP_Bool vertical) {
-  NOTIMPLEMENTED();  // Not proxied yet.
-  return 0;
-}
-
 PP_Resource ResourceCreationProxy::CreateVideoCapture(PP_Instance instance) {
   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
   if (!dispatcher)