Change most uses of Pickle to base::Pickle

content/child/plugin_param_traits.cc

Index: content/child/plugin_param_traits.cc
diff --git a/content/child/plugin_param_traits.cc b/content/child/plugin_param_traits.cc
index 27b21dd2e68111b1c96f235208e3ef5a264c4791..903936ad917fdf08f5e64f43de80d42cde958b5b 100644
--- a/content/child/plugin_param_traits.cc
+++ b/content/child/plugin_param_traits.cc
@@ -62,7 +62,7 @@ void ParamTraits<NPVariant_Param>::Write(Message* m, const param_type& p) {
 }
 
 bool ParamTraits<NPVariant_Param>::Read(const Message* m,
-                                        PickleIterator* iter,
+                                        base::PickleIterator* iter,
                                         param_type* r) {
   int type;
   if (!ReadParam(m, iter, &type))
@@ -117,7 +117,7 @@ void ParamTraits<NPIdentifier_Param>::Write(Message* m, const param_type& p) {
 }
 
 bool ParamTraits<NPIdentifier_Param>::Read(const Message* m,
-                                           PickleIterator* iter,
+                                           base::PickleIterator* iter,
                                            param_type* r) {
   return content::DeserializeNPIdentifier(iter, &r->identifier);
 }