Remove PPBoolToBool and BoolToPPBool and use PP_FromBool and PP_ToBool instead.

ppapi/proxy/ppapi_param_traits.cc

Index: ppapi/proxy/ppapi_param_traits.cc
===================================================================
--- ppapi/proxy/ppapi_param_traits.cc	(revision 91773)
+++ ppapi/proxy/ppapi_param_traits.cc	(working copy)
@@ -78,7 +78,7 @@
 
 // static
 void ParamTraits<PP_Bool>::Write(Message* m, const param_type& p) {
-  ParamTraits<bool>::Write(m, pp::proxy::PPBoolToBool(p));
+  ParamTraits<bool>::Write(m, PP_ToBool(p));
 }
 
 // static
@@ -89,7 +89,7 @@
   bool result = false;
   if (!ParamTraits<bool>::Read(m, iter, &result))
     return false;
-  *r = pp::proxy::BoolToPPBool(result);
+  *r = PP_FromBool(result);
   return true;
 }