extensions/browser/process_manager_observer.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_BROWSER_PROCESS_MANAGER_OBSERVER_H_
   6 #define EXTENSIONS_BROWSER_PROCESS_MANAGER_OBSERVER_H_
   7
   8 #include <string>
   9
  10 namespace content {
  11 class RenderFrameHost;
  12 }
  13
  14 namespace extensions {
  15 class Extension;
  16 class ExtensionHost;
  17
  18 class ProcessManagerObserver {
  19  public:
  20   // Called immediately after an extension background host is started. This
  21   // corresponds with the loading of background hosts immediately after profile
  22   // startup.
  23   virtual void OnBackgroundHostStartup(const Extension* extension) {}
  24
  25   // Called immediately after an ExtensionHost for an extension is created.
  26   // This corresponds with any time ProcessManager::OnBackgroundHostCreated is
  27   // called.
  28   virtual void OnBackgroundHostCreated(ExtensionHost* host) {}
  29
  30   // Called immediately after the extension background host is destroyed.
  31   virtual void OnBackgroundHostClose(const std::string& extension_id) {}
  32
  33   virtual void OnExtensionFrameRegistered(
  34       const std::string& extension_id,
  35       content::RenderFrameHost* render_frame_host) {}
  36
  37   virtual void OnExtensionFrameUnregistered(
  38       const std::string& extension_id,
  39       content::RenderFrameHost* render_frame_host) {}
  40 };
  41
  42 }  // namespace extensions
  43
  44 #endif  // EXTENSIONS_BROWSER_PROCESS_MANAGER_OBSERVER_H_