Remove PPBoolToBool and BoolToPPBool and use PP_FromBool and PP_ToBool instead.

ppapi/proxy/interface_proxy.h

Index: ppapi/proxy/interface_proxy.h
===================================================================
--- ppapi/proxy/interface_proxy.h	(revision 91773)
+++ ppapi/proxy/interface_proxy.h	(working copy)
@@ -72,14 +72,6 @@
   const void* target_interface_;
 };
 
-inline PP_Bool BoolToPPBool(bool value) {
-  return value ? PP_TRUE : PP_FALSE;
-}
-
-inline bool PPBoolToBool(PP_Bool value) {
-  return (PP_TRUE == value);
-}
-
 }  // namespace proxy
 }  // namespace pp