Merge definitions of PlatformFileToInt and IntToPlatformFile to one place.

ppapi/proxy/broker_dispatcher.cc

Index: ppapi/proxy/broker_dispatcher.cc
diff --git a/ppapi/proxy/broker_dispatcher.cc b/ppapi/proxy/broker_dispatcher.cc
index 30cee185aad16a20e386e64ead7f650ad728a87f..213dec1d0251b2cf0627b0e71c3e5a01f7ec775f 100644
--- a/ppapi/proxy/broker_dispatcher.cc
+++ b/ppapi/proxy/broker_dispatcher.cc
@@ -11,20 +11,6 @@
 namespace ppapi {
 namespace proxy {
 
-namespace {
-
-int32_t PlatformFileToInt(base::PlatformFile handle) {
-#if defined(OS_WIN)
-  return static_cast<int32_t>(reinterpret_cast<intptr_t>(handle));
-#elif defined(OS_POSIX)
-  return handle;
-#else
-  #error Not implemented.
-#endif
-}
-
-}  // namespace
-
 BrokerDispatcher::BrokerDispatcher(base::ProcessHandle remote_process_handle,
                                    PP_ConnectInstance_Func connect_instance)
     : ProxyChannel(remote_process_handle),