Small fixes to allow unit tests to compile with gcc 4.7.x (tested with gcc 4.7.2)

net/spdy/spdy_http_stream_spdy3_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/spdy/spdy_http_stream.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "crypto/ec_private_key.h"
 #include "crypto/ec_signature_creator.h"
@@ skipping 510 matching lines @@
                                *cert, 2, &credential);
 
   cert->assign(credential.certs[0]);
   proof->assign(credential.proof);
 }
 
 }  // namespace
 
 // Constructs a standard SPDY SYN_STREAM frame for a GET request with
 // a credential set.
-SpdyFrame* ConstructCredentialRequestFrame(int slot, const GURL& url,
-                                           int stream_id) {
+SpdyFrame* ConstructCredentialRequestFrame(size_t slot, const GURL& url,
+                                           SpdyStreamId stream_id) {
   const SpdyHeaderInfo syn_headers = {
     SYN_STREAM,
     stream_id,
     0,
     ConvertRequestPriorityToSpdyPriority(LOWEST, 3),
     slot,
     CONTROL_FLAG_FIN,
     false,
     INVALID,
     NULL,
@@ skipping 177 matching lines @@
 
   sequenced_worker_pool->Shutdown();
 }
 
 #endif  // !defined(USE_OPENSSL)
 
 // TODO(willchan): Write a longer test for SpdyStream that exercises all
 // methods.
 
 }  // namespace net