PlatformNotificationService layering cleanup.

chrome/test/base/testing_browser_process.h

Index: chrome/test/base/testing_browser_process.h
diff --git a/chrome/test/base/testing_browser_process.h b/chrome/test/base/testing_browser_process.h
index bebc5107ff5a70ff2d5801bcf520d01ad6617a0a..3d8ca3982e83e29d68f7612f6438bb952d640922 100644
--- a/chrome/test/base/testing_browser_process.h
+++ b/chrome/test/base/testing_browser_process.h
@@ -138,6 +138,8 @@ class TestingBrowserProcess : public BrowserProcess {
   void SetSystemRequestContext(net::URLRequestContextGetter* context_getter);
   void SetNotificationUIManager(
       std::unique_ptr<NotificationUIManager> notification_ui_manager);
+  void SetNotificationPlatformBridge(
+      std::unique_ptr<NotificationPlatformBridge> notification_platform_bridge);
   void SetRapporService(rappor::RapporService* rappor_service);
   void ShutdownBrowserPolicyConnector();
 
@@ -153,6 +155,7 @@ class TestingBrowserProcess : public BrowserProcess {
   bool created_browser_policy_connector_ = false;
   std::unique_ptr<ProfileManager> profile_manager_;
   std::unique_ptr<NotificationUIManager> notification_ui_manager_;
+  std::unique_ptr<NotificationPlatformBridge> notification_platform_bridge_;
 
 #if defined(ENABLE_PRINTING)
   std::unique_ptr<printing::PrintJobManager> print_job_manager_;