Keep browser process alive while there are platform apps with background pages running.

chrome/browser/extensions/platform_app_launcher.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/platform_app_launcher.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/api/app_runtime/app_runtime_api.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/lazy_background_task_queue.h"
+#include "chrome/browser/extensions/platform_app_service.h"
 #include "chrome/browser/intents/web_intents_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_intents_dispatcher.h"
 #include "net/base/mime_util.h"
@@ skipping 310 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(PlatformAppWebIntentLauncher);
 };
 
 }  // namespace
 
 void LaunchPlatformApp(Profile* profile,
                        const Extension* extension,
                        const CommandLine* command_line,
                        const FilePath& current_directory) {
+  PlatformAppService::CreateInstance(profile);
   FilePath path;
   if (!GetAbsolutePathFromCommandLine(command_line, current_directory, &path)) {
     LaunchPlatformAppWithNoData(profile, extension);
     return;
   }
 
   LaunchPlatformAppWithPath(profile, extension, path);
 }
 
 void LaunchPlatformAppWithPath(Profile* profile,
                                const Extension* extension,
                                const FilePath& file_path) {
+  PlatformAppService::CreateInstance(profile);
   // launcher will be freed when nothing has a reference to it. The message
   // queue will retain a reference for any outstanding task, so when the
   // launcher has finished it will be freed.
   scoped_refptr<PlatformAppPathLauncher> launcher =
       new PlatformAppPathLauncher(profile, extension, file_path);
   launcher->Launch();
 }
 
 void LaunchPlatformAppWithWebIntent(
     Profile* profile,
     const Extension* extension,
     content::WebIntentsDispatcher* intents_dispatcher,
     content::WebContents* source) {
+  PlatformAppService::CreateInstance(profile);
   scoped_refptr<PlatformAppWebIntentLauncher> launcher =
       new PlatformAppWebIntentLauncher(
           profile, extension, intents_dispatcher, source);
   launcher->Launch();
 }
 
 }  // namespace extensions