Add Socket::ReadIfReady()

net/socket/ssl_client_socket_impl.h

Index: net/socket/ssl_client_socket_impl.h
diff --git a/net/socket/ssl_client_socket_impl.h b/net/socket/ssl_client_socket_impl.h
index 86505ab2f4a80c3d8620bf3684b999603bf1bcf8..d0ebcb3c81c4302a11d2f144a906cf0d73b2f69d 100644
--- a/net/socket/ssl_client_socket_impl.h
+++ b/net/socket/ssl_client_socket_impl.h
@@ -127,6 +127,9 @@ class SSLClientSocketImpl : public SSLClientSocket,
   int Read(IOBuffer* buf,
            int buf_len,
            const CompletionCallback& callback) override;
+  int ReadIfReady(IOBuffer* buf,
+                  int buf_len,
+                  const CompletionCallback& callback) override;
   int Write(IOBuffer* buf,
             int buf_len,
             const CompletionCallback& callback) override;
@@ -134,8 +137,8 @@ class SSLClientSocketImpl : public SSLClientSocket,
   int SetSendBufferSize(int32_t size) override;
 
   // SocketBIOAdapter implementation:
-  void OnReadReady() override;
-  void OnWriteReady() override;
+  void OnReadReady(int rv) override;
+  void OnWriteReady(int rv) override;
 
  private:
   class PeerCertificateChain;
@@ -159,13 +162,14 @@ class SSLClientSocketImpl : public SSLClientSocket,
   void OnHandshakeIOComplete(int result);
 
   int DoHandshakeLoop(int last_io_result);
-  int DoPayloadRead();
+  int DoPayloadRead(IOBuffer* buf, int buf_len);
   int DoPayloadWrite();
 
   // Called when an asynchronous event completes which may have blocked the
   // pending Connect, Read or Write calls, if any. Retries all state machines
-  // and, if complete, runs the respective callbacks.
-  void RetryAllOperations();
+  // and, if complete, runs the respective callbacks. |rv| is the net error
+  // of the last asynchronous event.
+  void RetryAllOperations(int rv);
 
   int VerifyCT();