Fix valgrind warning in remoting_unittests due to uninitialized memory.

remoting/protocol/connection_tester.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 "remoting/protocol/connection_tester.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
@@ skipping 41 matching lines @@
 }
 
 void StreamConnectionTester::Done() {
   done_ = true;
   message_loop_->PostTask(FROM_HERE, MessageLoop::QuitClosure());
 }
 
 void StreamConnectionTester::InitBuffers() {
   output_buffer_ = new net::DrainableIOBuffer(
       new net::IOBuffer(test_data_size_), test_data_size_);
+  for (int i = 0; i < test_data_size_; ++i) {
+    output_buffer_->data()[i] = static_cast<char>(i);
+  }
 
   input_buffer_ = new net::GrowableIOBuffer();
 }
 
 void StreamConnectionTester::DoWrite() {
   int result = 1;
   while (result > 0) {
     if (output_buffer_->BytesRemaining() == 0)
       break;
 
@@ skipping 96 matching lines @@
   message_loop_->PostTask(FROM_HERE, MessageLoop::QuitClosure());
 }
 
 void DatagramConnectionTester::DoWrite() {
   if (packets_sent_ >= message_count_) {
     Done();
     return;
   }
 
   scoped_refptr<net::IOBuffer> packet(new net::IOBuffer(message_size_));
-  memset(packet->data(), 123, message_size_);
+  for (int i = 0; i < message_size_; ++i) {
+    packet->data()[i] = static_cast<char>(i);
+  }
   sent_packets_[packets_sent_] = packet;
   // Put index of this packet in the beginning of the packet body.
   memcpy(packet->data(), &packets_sent_, sizeof(packets_sent_));
 
   int result = client_socket_->Write(
       packet, message_size_,
       base::Bind(&DatagramConnectionTester::OnWritten, base::Unretained(this)));
   HandleWriteResult(result);
 }
 
@@ skipping 53 matching lines @@
         if (memcmp(read_buffer_->data(), sent_packets_[packet_id]->data(),
                    message_size_) != 0)
           bad_packets_received_++;
       }
     }
   }
 }
 
 }  // namespace protocol
 }  // namespace remoting