Revert of Remove deprecated methods from Pickle.

content/common/content_param_traits.cc

Index: content/common/content_param_traits.cc
diff --git a/content/common/content_param_traits.cc b/content/common/content_param_traits.cc
index 21e188b29065c5505f35aef8b69c300a086f1877..0f1ba055121f573a92e9296fd8773caf9ef95d72 100644
--- a/content/common/content_param_traits.cc
+++ b/content/common/content_param_traits.cc
@@ -20,7 +20,7 @@
                                   PickleIterator* iter,
                                   gfx::Range* r) {
   size_t start, end;
-  if (!iter->ReadSizeT(&start) || !iter->ReadSizeT(&end))
+  if (!m->ReadSizeT(iter, &start) || !m->ReadSizeT(iter, &end))
     return false;
   r->set_start(start);
   r->set_end(end);
@@ -40,7 +40,7 @@
                                              param_type* r) {
   const char* data;
   int data_length;
-  if (!iter->ReadData(&data, &data_length)) {
+  if (!m->ReadData(iter, &data, &data_length)) {
     NOTREACHED();
     return false;
   }