Remove calls to MessageLoop::current() in extensions.

extensions/browser/process_manager.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 "extensions/browser/process_manager.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 790 matching lines @@
             keepalive_impulse_decrement_callback_for_testing_;
         callback_may_clear_callbacks_reentrantly.Run(i->first);
       }
     }
 
     i->second.previous_keepalive_impulse = i->second.keepalive_impulse;
     i->second.keepalive_impulse = false;
   }
 
   // OnKeepaliveImpulseCheck() is always called in constructor, but in unit
-  // tests there will be no message loop. In that event don't schedule tasks.
-  if (base::MessageLoop::current()) {
+  // tests there will be no thread task runner handle. In that event don't
+  // schedule tasks.
+  if (base::ThreadTaskRunnerHandle::IsSet()) {
     base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE, base::Bind(&ProcessManager::OnKeepaliveImpulseCheck,
                               weak_ptr_factory_.GetWeakPtr()),
         base::TimeDelta::FromMilliseconds(g_event_page_idle_time_msec));
   }
 }
 
 void ProcessManager::OnLazyBackgroundPageIdle(const std::string& extension_id,
                                               uint64_t sequence_id) {
   ExtensionHost* host = GetBackgroundHostForExtension(extension_id);
@@ skipping 152 matching lines @@
   if (extension && !IncognitoInfo::IsSplitMode(extension)) {
     BrowserContext* original_context =
         ExtensionsBrowserClient::Get()->GetOriginalContext(browser_context());
     return ProcessManager::Get(original_context)->GetSiteInstanceForURL(url);
   }
 
   return ProcessManager::GetSiteInstanceForURL(url);
 }
 
 }  // namespace extensions