Extract ErrorConsole from ExtensionSystem.

chrome/browser/extensions/chrome_extension_web_contents_observer.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 "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 
 #include "chrome/browser/extensions/error_console/error_console.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/common/extensions/chrome_extension_messages.h"
 #include "content/public/browser/browser_context.h"
@@ skipping 42 matching lines @@
     int32 severity_level) {
   if (!IsSourceFromAnExtension(source))
     return;
 
   content::RenderViewHost* render_view_host =
       web_contents()->GetRenderViewHost();
   std::string extension_id = GetExtensionId(render_view_host);
   if (extension_id.empty())
     extension_id = GURL(source).host();
 
-  ExtensionSystem::Get(browser_context())->error_console()->ReportError(
+  ErrorConsole::Get(browser_context())->ReportError(
       scoped_ptr<ExtensionError>(
           new RuntimeError(extension_id,
                            browser_context()->IsOffTheRecord(),
                            source,
                            message,
                            stack_trace,
                            web_contents()->GetLastCommittedURL(),
                            static_cast<logging::LogSeverity>(severity_level),
                            render_view_host->GetRoutingID(),
                            render_view_host->GetProcess()->GetID())));
@@ skipping 11 matching lines @@
   // TODO(yoz): This reload doesn't happen synchronously for unpacked
   //            extensions. It seems to be fast enough, but there is a race.
   //            We should delay loading until the extension has reloaded.
   if (registry->GetExtensionById(extension_id, ExtensionRegistry::TERMINATED)) {
     ExtensionSystem::Get(browser_context())->
         extension_service()->ReloadExtension(extension_id);
   }
 }
 
 }  // namespace extensions