Revert of Test Keeping NaCl plugins used in app background pages alive when active.

extensions/browser/process_manager.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_PROCESS_MANAGER_H_
 #define EXTENSIONS_BROWSER_PROCESS_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 103 matching lines @@
   // onSuspendCanceled() event to it.
   void CancelSuspend(const Extension* extension);
 
   // Ensures background hosts are loaded for a new browser window.
   void OnBrowserWindowReady();
 
   // Gets the BrowserContext associated with site_instance_ and all other
   // related SiteInstances.
   content::BrowserContext* GetBrowserContext() const;
 
-  // Sets callbacks for testing keepalive impulse behavior.
-  typedef base::Callback<void(const std::string& extension_id)>
-      ImpulseCallbackForTesting;
-  void SetKeepaliveImpulseCallbackForTesting(
-      const ImpulseCallbackForTesting& callback);
-  void SetKeepaliveImpulseDecrementCallbackForTesting(
-      const ImpulseCallbackForTesting& callback);
-
  protected:
   // If |context| is incognito pass the master context as |original_context|.
   // Otherwise pass the same context for both.
   ProcessManager(content::BrowserContext* context,
                  content::BrowserContext* original_context);
 
   // Called on browser shutdown to close our extension hosts.
   void CloseBackgroundHosts();
 
   // content::NotificationObserver:
@@ skipping 75 matching lines @@
 
   // The time to delay between sending a ShouldSuspend message and
   // sending a Suspend message; read from command-line switch.
   base::TimeDelta event_page_suspending_time_;
 
   // True if we have created the startup set of background hosts.
   bool startup_background_hosts_created_;
 
   base::Callback<void(content::DevToolsAgentHost*, bool)> devtools_callback_;
 
-  ImpulseCallbackForTesting keepalive_impulse_callback_for_testing_;
-  ImpulseCallbackForTesting keepalive_impulse_decrement_callback_for_testing_;
-
   base::WeakPtrFactory<ProcessManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_PROCESS_MANAGER_H_