[Android] Fix gn build for instrumentation tests.

tools/android/forwarder2/forwarder.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 "tools/android/forwarder2/forwarder.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
 #include "tools/android/forwarder2/socket.h"
 
 namespace forwarder2 {
 namespace {
 
 const int kBufferSize = 32 * 1024;
 
 }  // namespace
 
 
 // Helper class to buffer reads and writes from one socket to another.
 // Each implements a small buffer connected two one input socket, and
 // one output socket.
 //
 //   socket_from_ ---> [BufferedCopier] ---> socket_to_
 //
 // These objects are used in a pair to handle duplex traffic, as in:
 //
-//                    ------> [BufferedCopier_1] --->
-//                  /                                \
+//                   -------> [BufferedCopier_1] --->
+//                  |                                |
 //      socket_1   *                                  * socket_2
-//                  \                                /
+//                  |                                |
 //                   <------ [BufferedCopier_2] <----
 //
 // When a BufferedCopier is in the READING state (see below), it only listens
 // to events on its input socket, and won't detect when its output socket
 // disconnects. To work around this, its peer will call its Close() method
 // when that happens.
 
 class Forwarder::BufferedCopier {
  public:
   // Possible states:
@@ skipping 204 matching lines @@
   return buffer1_->is_closed() && buffer2_->is_closed();
 }
 
 void Forwarder::Shutdown() {
   DCHECK(thread_checker_.CalledOnValidThread());
   buffer1_->Close();
   buffer2_->Close();
 }
 
 }  // namespace forwarder2