Refactor Pickle Read methods to use higher performance PickleIterator.

ipc/ipc_message_unittest.cc

Index: ipc/ipc_message_unittest.cc
diff --git a/ipc/ipc_message_unittest.cc b/ipc/ipc_message_unittest.cc
index 7339e308770776d02b28e06f24af767866c9c2f0..81db69061e96ba64281f16e4c0524a2f1e1e5ad8 100644
--- a/ipc/ipc_message_unittest.cc
+++ b/ipc/ipc_message_unittest.cc
@@ -21,7 +21,7 @@ TEST(IPCMessageTest, ListValue) {
   IPC::WriteParam(&msg, input);
 
   ListValue output;
-  void* iter = NULL;
+  PickleReader iter(msg);
   EXPECT_TRUE(IPC::ReadParam(&msg, &iter, &output));
 
   EXPECT_TRUE(input.Equals(&output));
@@ -29,7 +29,7 @@ TEST(IPCMessageTest, ListValue) {
   // Also test the corrupt case.
   IPC::Message bad_msg(1, 2, IPC::Message::PRIORITY_NORMAL);
   bad_msg.WriteInt(99);
-  iter = NULL;
+  iter = PickleReader(bad_msg);
   EXPECT_FALSE(IPC::ReadParam(&bad_msg, &iter, &output));
 }
 
@@ -56,7 +56,7 @@ TEST(IPCMessageTest, DictionaryValue) {
   IPC::WriteParam(&msg, input);
 
   DictionaryValue output;
-  void* iter = NULL;
+  PickleReader iter(msg);
   EXPECT_TRUE(IPC::ReadParam(&msg, &iter, &output));
 
   EXPECT_TRUE(input.Equals(&output));
@@ -64,6 +64,6 @@ TEST(IPCMessageTest, DictionaryValue) {
   // Also test the corrupt case.
   IPC::Message bad_msg(1, 2, IPC::Message::PRIORITY_NORMAL);
   bad_msg.WriteInt(99);
-  iter = NULL;
+  iter = PickleReader(bad_msg);
   EXPECT_FALSE(IPC::ReadParam(&bad_msg, &iter, &output));
 }