Provide a way to disable Nagle's algorithm on Pepper TCP sockets.

ppapi/shared_impl/private/tcp_socket_private_impl.cc

Index: ppapi/shared_impl/private/tcp_socket_private_impl.cc
diff --git a/ppapi/shared_impl/private/tcp_socket_private_impl.cc b/ppapi/shared_impl/private/tcp_socket_private_impl.cc
index e2c645f0ae5a1d20cb14c301362fe80e7979dec6..87cc600d57c3d0079fe920aa18c91d6798692004 100644
--- a/ppapi/shared_impl/private/tcp_socket_private_impl.cc
+++ b/ppapi/shared_impl/private/tcp_socket_private_impl.cc
@@ -212,11 +212,34 @@ void TCPSocketPrivateImpl::Disconnect() {
   PostAbortIfNecessary(&ssl_handshake_callback_);
   PostAbortIfNecessary(&read_callback_);
   PostAbortIfNecessary(&write_callback_);
+  PostAbortIfNecessary(&set_option_callback_);
   read_buffer_ = NULL;
   bytes_to_read_ = -1;
   server_certificate_ = NULL;
 }
 
+int32_t TCPSocketPrivateImpl::SetOption(
+    PP_TCPSocketOption_Private name,
+    const PP_Var& value,
+    scoped_refptr<TrackedCallback> callback) {
+  if (!IsConnected())
+    return PP_ERROR_FAILED;
+  if (TrackedCallback::IsPending(set_option_callback_))
+    return PP_ERROR_INPROGRESS;
+
+  set_option_callback_ = callback;
+
+  switch (name) {
+    case PP_TCPSOCKETOPTION_NO_DELAY:
+      if (value.type != PP_VARTYPE_BOOL)
+        return PP_ERROR_BADARGUMENT;
+      SendSetBoolOption(name, PP_ToBool(value.value.as_bool));
+      return PP_OK_COMPLETIONPENDING;
+    default:
+      return PP_ERROR_BADARGUMENT;
+  }
+}
+
 void TCPSocketPrivateImpl::OnConnectCompleted(
     bool succeeded,
     const PP_NetAddress_Private& local_addr,
@@ -293,6 +316,15 @@ void TCPSocketPrivateImpl::OnWriteCompleted(bool succeeded,
       succeeded ? bytes_written : static_cast<int32_t>(PP_ERROR_FAILED));
 }
 
+void TCPSocketPrivateImpl::OnSetOptionCompleted(bool succeeded) {
+  if (!TrackedCallback::IsPending(set_option_callback_)) {
+    NOTREACHED();
+    return;
+  }
+
+  set_option_callback_->Run(succeeded ? PP_OK : PP_ERROR_FAILED);
+}
+
 void TCPSocketPrivateImpl::Init(uint32 socket_id) {
   DCHECK(socket_id != 0);
   socket_id_ = socket_id;