Remove unused IPC::Message priority.

ppapi/host/resource_message_filter_unittest.cc

Index: ppapi/host/resource_message_filter_unittest.cc
diff --git a/ppapi/host/resource_message_filter_unittest.cc b/ppapi/host/resource_message_filter_unittest.cc
index 78fc23cf6b43bd34f712e881b1ba9cbe101445b4..38fd9d8f50e65b1e4d86d33845aa5b90c3b93b5f 100644
--- a/ppapi/host/resource_message_filter_unittest.cc
+++ b/ppapi/host/resource_message_filter_unittest.cc
@@ -64,8 +64,7 @@ class MyResourceHost : public ResourceHost {
       HostMessageContext* context) OVERRIDE {
     last_handled_msg_ = msg;
     if (msg.type() == msg_type_) {
-      context->reply_msg = IPC::Message(0, reply_msg_type_,
-                                        IPC::Message::PRIORITY_NORMAL);
+      context->reply_msg = IPC::Message(0, reply_msg_type_);
       return PP_OK;
     }
     return PP_ERROR_FAILED;
@@ -123,8 +122,7 @@ class MyResourceFilter : public ResourceMessageFilter {
     last_handled_msg_ = msg;
     last_message_loop_ = base::MessageLoop::current();
     if (msg.type() == msg_type_) {
-      context->reply_msg = IPC::Message(0, reply_msg_type_,
-                                        IPC::Message::PRIORITY_NORMAL);
+      context->reply_msg = IPC::Message(0, reply_msg_type_);
       return PP_OK;
     }
     return PP_ERROR_FAILED;
@@ -166,9 +164,9 @@ TEST_F(ResourceMessageFilterTest, TestHandleMessage) {
   proxy::ResourceMessageCallParams params(resource, 1);
   params.set_has_callback();
   HostMessageContext context(params);
-  IPC::Message message1(0, MSG1_TYPE, IPC::Message::PRIORITY_NORMAL);
-  IPC::Message message2(0, MSG2_TYPE, IPC::Message::PRIORITY_NORMAL);
-  IPC::Message message3(0, MSG3_TYPE, IPC::Message::PRIORITY_NORMAL);
+  IPC::Message message1(0, MSG1_TYPE);
+  IPC::Message message2(0, MSG2_TYPE);
+  IPC::Message message3(0, MSG3_TYPE);
 
   // Message 1 handled by the first filter.
   host.HandleMessage(message1, &context);