Changed the SafeJsonParser connection error message.

components/safe_json/safe_json_parser_impl.cc

 // Copyright 2013 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 "components/safe_json/safe_json_parser_impl.h"
 
 #include "base/callback.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/sequenced_task_runner_handle.h"
 #include "base/values.h"
@@ skipping 38 matching lines @@
       base::Bind(&SafeJsonParserImpl::OnParseDone, base::Unretained(this)));
 }
 
 void SafeJsonParserImpl::OnConnectionError() {
   DCHECK(io_thread_checker_.CalledOnValidThread());
 
   // Shut down the utility process.
   mojo_json_parser_.reset();
 
   caller_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&SafeJsonParserImpl::ReportResults,
-                            base::Unretained(this), nullptr, "Json error"));
+      FROM_HERE,
+      base::Bind(&SafeJsonParserImpl::ReportResults, base::Unretained(this),
+                 nullptr, "Connection error with the json parser process."));
 }
 
 void SafeJsonParserImpl::OnParseDone(const base::ListValue& wrapper,
                                      const base::Optional<std::string>& error) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
 
   // Shut down the utility process.
   mojo_json_parser_.reset();
 
   std::unique_ptr<base::Value> parsed_json;
@@ skipping 23 matching lines @@
     if (!error_callback_.is_null())
       error_callback_.Run(error);
   }
 
   // The parsing is done whether an error occured or not, so this instance can
   // be cleaned up.
   delete this;
 }
 
 }  // namespace safe_json