base: Remove the string logging from CHECK().

blimp/client/core/session/assignment_source.cc

 // Copyright 2016 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 "blimp/client/core/session/assignment_source.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 96 matching lines @@
 }
 
 // Populates an Assignment using command-line parameters, if provided.
 // Returns a null Assignment if no parameters were set.
 // Must be called on a thread suitable for file IO.
 Assignment GetAssignmentFromCommandLine() {
   Assignment assignment;
 
   const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
   assignment.client_auth_token = GetClientAuthToken(*cmd_line);
-  CHECK(!assignment.client_auth_token.empty())
-      << "No client auth token provided.";
+  // No client auth token provided.
+  CHECK(!assignment.client_auth_token.empty());
 
   unsigned port_parsed = 0;
   if (!base::StringToUint(
           cmd_line->GetSwitchValueASCII(switches::kEnginePort),
           &port_parsed) || !IsValidIpPortNumber(port_parsed)) {
     DLOG(FATAL) << "--engine-port must be a value between 1 and 65535.";
     return Assignment();
   }
 
   net::IPAddress ip_address;
@@ skipping 246 matching lines @@
 }
 
 void AssignmentSource::OnJsonParseError(const std::string& error) {
   DLOG(ERROR) << "Error while parsing assigner JSON: " << error;
   base::ResetAndReturn(&callback_)
       .Run(ASSIGNMENT_REQUEST_RESULT_BAD_RESPONSE, Assignment());
 }
 
 }  // namespace client
 }  // namespace blimp