base::Bind: Convert Socket::Read.

net/socket/ssl_client_socket_mac.cc

Index: net/socket/ssl_client_socket_mac.cc
diff --git a/net/socket/ssl_client_socket_mac.cc b/net/socket/ssl_client_socket_mac.cc
index 817b3bef25d76de67f472fd79fd126e75dead27c..f58d3409ac9fb813a1f627c9c8eb2769f1198640 100644
--- a/net/socket/ssl_client_socket_mac.cc
+++ b/net/socket/ssl_client_socket_mac.cc
@@ -532,7 +532,7 @@ SSLClientSocketMac::SSLClientSocketMac(ClientSocketHandle* transport_socket,
       host_and_port_(host_and_port),
       ssl_config_(ssl_config),
       old_user_connect_callback_(NULL),
-      user_read_callback_(NULL),
+      old_user_read_callback_(NULL),
       user_write_callback_(NULL),
       user_read_buf_len_(0),
       user_write_buf_len_(0),
@@ -700,7 +700,25 @@ base::TimeDelta SSLClientSocketMac::GetConnectTimeMicros() const {
 int SSLClientSocketMac::Read(IOBuffer* buf, int buf_len,
                              OldCompletionCallback* callback) {
   DCHECK(completed_handshake());
-  DCHECK(!user_read_callback_);
+  DCHECK(!old_user_read_callback_ && user_read_callback_.is_null());
+  DCHECK(!user_read_buf_);
+
+  user_read_buf_ = buf;
+  user_read_buf_len_ = buf_len;
+
+  int rv = DoPayloadRead();
+  if (rv == ERR_IO_PENDING) {
+    old_user_read_callback_ = callback;
+  } else {
+    user_read_buf_ = NULL;
+    user_read_buf_len_ = 0;
+  }
+  return rv;
+}
+int SSLClientSocketMac::Read(IOBuffer* buf, int buf_len,
+                             const CompletionCallback& callback) {
+  DCHECK(completed_handshake());
+  DCHECK(!old_user_read_callback_ && user_read_callback_.is_null());
   DCHECK(!user_read_buf_);
 
   user_read_buf_ = buf;
@@ -933,15 +951,23 @@ void SSLClientSocketMac::DoConnectCallback(int rv) {
 
 void SSLClientSocketMac::DoReadCallback(int rv) {
   DCHECK(rv != ERR_IO_PENDING);
-  DCHECK(user_read_callback_);
+  DCHECK(old_user_read_callback_ || !user_read_callback_.is_null());
 
   // Since Run may result in Read being called, clear user_read_callback_ up
   // front.
-  OldCompletionCallback* c = user_read_callback_;
-  user_read_callback_ = NULL;
-  user_read_buf_ = NULL;
-  user_read_buf_len_ = 0;
-  c->Run(rv);
+  if (old_user_read_callback_) {
+    OldCompletionCallback* c = old_user_read_callback_;
+    old_user_read_callback_ = NULL;
+    user_read_buf_ = NULL;
+    user_read_buf_len_ = 0;
+    c->Run(rv);
+  } else {
+    CompletionCallback c = user_read_callback_;
+    user_read_callback_.Reset();
+    user_read_buf_ = NULL;
+    user_read_buf_len_ = 0;
+    c.Run(rv);
+  }
 }
 
 void SSLClientSocketMac::DoWriteCallback(int rv) {