Replace gendered terms for files in ppapi/proxy/...

ppapi/proxy/ppp_messaging_proxy_unittest.cc

Index: ppapi/proxy/ppp_messaging_proxy_unittest.cc
diff --git a/ppapi/proxy/ppp_messaging_proxy_unittest.cc b/ppapi/proxy/ppp_messaging_proxy_unittest.cc
index 703e43035e4a8c3e87701d5737778f82199c4892..ef3608c4e738fe7d9d07ff0f6f14507117b91f71 100644
--- a/ppapi/proxy/ppp_messaging_proxy_unittest.cc
+++ b/ppapi/proxy/ppp_messaging_proxy_unittest.cc
@@ -20,9 +20,8 @@ namespace proxy {
 
 namespace {
 
-// This is a poor man's mock of PPP_Messaging using global variables. Eventually
-// we should generalize making PPAPI interface mocks by using IDL or macro/
-// template magic.
+// This is an ad-hoc mock of PPP_Messaging using global variables. Eventually,
+// generalize making PPAPI interface mocks by using IDL or macro/template magic.
 PP_Instance received_instance;
 PP_Var received_var;
 base::WaitableEvent handle_message_called(