Gather metrics classifying the cause of the TLS fallback.

chrome/browser/extensions/api/socket/tls_socket_unittest.cc

 // Copyright 2014 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 "extensions/browser/api/socket/tls_socket.h"
 
 #include <deque>
 #include <utility>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 48 matching lines @@
                    const StringPiece&,
                    unsigned char*,
                    unsigned int));
   MOCK_METHOD1(GetTLSUniqueChannelBinding, int(std::string*));
   MOCK_METHOD1(GetSSLCertRequestInfo, void(net::SSLCertRequestInfo*));
   MOCK_CONST_METHOD1(GetNextProto,
                      net::SSLClientSocket::NextProtoStatus(std::string*));
   MOCK_CONST_METHOD0(GetUnverifiedServerCertificateChain,
                      scoped_refptr<net::X509Certificate>());
   MOCK_CONST_METHOD0(GetChannelIDService, net::ChannelIDService*());
+  MOCK_CONST_METHOD0(GetSSLFailureState, net::SSLFailureState());

[Ryan Sleevi, 2015/05/14 23:30:20]

Not your fault, but a lot of this API is all "Danger Zone" because it fails to
actually return the bits from the Mock, and thus can cause who knows what kind
of side-effects :)

[davidben, 2015/05/15 18:00:23]

Acknowledged. (I'm assuming there's nothing really to be done here? I could
switch this and most of the rest to concrete no-op implementations.)

   bool IsConnected() const override { return true; }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockSSLClientSocket);
 };
 
 class MockTCPSocket : public net::TCPClientSocket {
  public:
   explicit MockTCPSocket(const net::AddressList& address_list)
       : net::TCPClientSocket(address_list, NULL, net::NetLog::Source()) {}
@@ skipping 225 matching lines @@
     total_bytes_written += amount_written_invocation;
     cb.first.Run(amount_written_invocation);
   }
 
   ASSERT_EQ(total_bytes_requested, total_bytes_written)
       << "There should be exactly as many bytes written as originally "
       << "requested to Write().";
 }
 
 }  // namespace extensions