Introduce runtime.onSuspendCanceled() event.

chrome/browser/extensions/extension_message_service.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/browser/extensions/extension_message_service.h"
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/json/json_writer.h"
@@ skipping 124 matching lines @@
 }
 
 static void IncrementLazyKeepaliveCount(
     ExtensionMessageService::MessagePort* port) {
   Profile* profile =
       Profile::FromBrowserContext(port->process->GetBrowserContext());
   ExtensionProcessManager* pm =
       extensions::ExtensionSystem::Get(profile)->process_manager();
   ExtensionHost* host = pm->GetBackgroundHostForExtension(port->extension_id);
   if (host && host->extension()->has_lazy_background_page())
-    pm->IncrementLazyKeepaliveCount(
-        host->extension(), ExtensionProcessManager::CANCEL_SUSPEND);
+    pm->IncrementLazyKeepaliveCount(host->extension());
 
   // Keep track of the background host, so when we decrement, we only do so if
   // the host hasn't reloaded.
   port->background_host_ptr = host;
 }
 
 static void DecrementLazyKeepaliveCount(
     ExtensionMessageService::MessagePort* port) {
   Profile* profile =
       Profile::FromBrowserContext(port->process->GetBrowserContext());
@@ skipping 307 matching lines @@
   OpenChannelParams params = params_in;
   params.source = content::RenderProcessHost::FromID(source_process_id);
   if (!params.source)
     return;
 
   params.receiver = MessagePort(host->render_process_host(),
                                 MSG_ROUTING_CONTROL,
                                 params.target_extension_id);
   OpenChannelImpl(params);
 }