[chromedriver] Add an error autoreporting feature that automatically raises errors from browser logs

chrome/test/chromedriver/commands.cc

 // Copyright (c) 2012 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 "chrome/test/chromedriver/commands.h"
 
 #include <algorithm>
 #include <list>
 #include <utility>
 
@@ skipping 176 matching lines @@
     std::string result;
     if (status.IsError()) {
       result = status.message();
     } else if (value) {
       result = FormatValueForDisplay(*value);
     }
     VLOG(0) << "RESPONSE " << command_name
             << (result.length() ? " " + result : "");
   }
 
+  if (status.IsOk() && session->auto_reporting_enabled) {
+    std::string message = session->GetFirstBrowserError();
+    if (!message.empty())
+      status = Status(kUnknownError, message);
+  }
+
   cmd_task_runner->PostTask(
       FROM_HERE,
       base::Bind(callback_on_cmd, status, base::Passed(&value), session->id));
 
   if (session->quit) {
     SetThreadLocalSession(scoped_ptr<Session>());
     delete session;
     cmd_task_runner->PostTask(FROM_HERE, terminate_on_cmd);
   }
 }
@@ skipping 28 matching lines @@
   }
 }
 
 namespace internal {
 
 void CreateSessionOnSessionThreadForTesting(const std::string& id) {
   SetThreadLocalSession(make_scoped_ptr(new Session(id)));
 }
 
 }  // namespace internal