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

ppapi/proxy/ppp_instance_proxy_unittest.cc

Index: ppapi/proxy/ppp_instance_proxy_unittest.cc
diff --git a/ppapi/proxy/ppp_instance_proxy_unittest.cc b/ppapi/proxy/ppp_instance_proxy_unittest.cc
index 6c696a786d310042ed244a9f5cfdfd0236d3bd6a..c3098d708db0a44f8d54152b8158a20441532e3e 100644
--- a/ppapi/proxy/ppp_instance_proxy_unittest.cc
+++ b/ppapi/proxy/ppp_instance_proxy_unittest.cc
@@ -22,9 +22,9 @@ namespace ppapi {
 namespace proxy {
 
 namespace {
-// This is a poor man's mock of PPP_Instance 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_Instance using global variables. Eventually,
+// generalize making PPAPI interface mocks by using IDL or macro/template magic.
 PP_Instance received_instance;
 uint32_t received_argc;
 std::vector<std::string> received_argn;