[gcc 4.8] Fix compilation failure for EXPECT_EQ reported due to -Werror=conversion-null in cast_soc…

extensions/browser/api/cast_channel/cast_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/cast_channel/cast_socket.h"
 
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 285 matching lines @@
             net::AddressList(), &capturing_net_log_, ssl_data_.get()));
   }
 
   virtual bool ExtractPeerCert(std::string* cert) OVERRIDE {
     if (extract_cert_result_)
       cert->assign("dummy_test_cert");
     return extract_cert_result_;
   }
 
   virtual bool VerifyChallengeReply() OVERRIDE {
-    EXPECT_EQ(false, verify_challenge_disallow_);
+    EXPECT_FALSE(verify_challenge_disallow_);
     return verify_challenge_result_;
   }
 
   virtual base::Timer* GetTimer() OVERRIDE {
     return mock_timer_.get();
   }
 
   net::CapturingNetLog capturing_net_log_;
   net::IPEndPoint ip_;
   // Simulated connect data
@@ skipping 806 matching lines @@
   ConnectHelper();
 
   EXPECT_EQ(cast_channel::READY_STATE_CLOSED, socket_->ready_state());
   EXPECT_EQ(cast_channel::CHANNEL_ERROR_INVALID_MESSAGE,
             socket_->error_state());
 }
 
 }  // namespace cast_channel
 }  // namespace core_api
 }  // namespace extensions