Add P2PDatagramSocket and P2PStreamSocket interfaces.

remoting/base/buffered_socket_writer_unittest.cc

Index: remoting/base/buffered_socket_writer_unittest.cc
diff --git a/remoting/base/buffered_socket_writer_unittest.cc b/remoting/base/buffered_socket_writer_unittest.cc
index 07bb2ece17d6b290005da58b79aadc6a83d07f79..03c7504af1413118a99a145cb0d9b503c6e48d41 100644
--- a/remoting/base/buffered_socket_writer_unittest.cc
+++ b/remoting/base/buffered_socket_writer_unittest.cc
@@ -94,8 +94,10 @@ class BufferedSocketWriterTest : public testing::Test {
     EXPECT_EQ(net::OK, socket_->Connect(net::CompletionCallback()));
 
     writer_.reset(new BufferedSocketWriter());
-    writer_->Init(socket_.get(), base::Bind(
-        &BufferedSocketWriterTest::OnWriteFailed, base::Unretained(this)));
+    writer_->Init(
+        base::Bind(&net::Socket::Write, base::Unretained(socket_.get())),
+        base::Bind(&BufferedSocketWriterTest::OnWriteFailed,
+                   base::Unretained(this)));
     test_buffer_ = new net::IOBufferWithSize(kTestBufferSize);
     test_buffer_2_ = new net::IOBufferWithSize(kTestBufferSize);
     for (int i = 0; i< kTestBufferSize; ++i) {