Use the appropriate variant of IntToString in //remoting

remoting/protocol/message_decoder_unittest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "remoting/proto/event.pb.h"
@@ skipping 73 matching lines @@
     pos += read;
   }
 
   // Then verify the decoded messages.
   EXPECT_EQ(10u, message_list.size());
 
   unsigned int index = 0;
   for (std::list<EventMessage*>::iterator it =
            message_list.begin();
        it != message_list.end(); ++it) {
-    SCOPED_TRACE("Message " + base::IntToString(index));
+    SCOPED_TRACE("Message " + base::UintToString(index));
 
     EventMessage* message = *it;
     // Partial update stream.
     EXPECT_TRUE(message->has_key_event());
 
     // TODO(sergeyu): Don't use index here. Instead store the expected values
     // in an array.
     EXPECT_EQ(kTestKey + index, message->key_event().usb_keycode());
     EXPECT_EQ((index % 2) != 0, message->key_event().pressed());
     ++index;
@@ skipping 11 matching lines @@
   SimulateReadSequence(kReads, arraysize(kReads));
 }
 
 TEST(MessageDecoderTest, EmptyReads) {
   const int kReads[] = {4, 0, 50, 0};
   SimulateReadSequence(kReads, arraysize(kReads));
 }
 
 }  // namespace protocol
 }  // namespace remoting