Deal with frame removal by content scripts

extensions/renderer/script_injection_manager.h

 // Copyright 2014 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_RENDERER_SCRIPT_INJECTION_MANAGER_H_
 #define EXTENSIONS_RENDERER_SCRIPT_INJECTION_MANAGER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 20 matching lines @@
 // The ScriptInjectionManager manages extensions injecting scripts into frames
 // via both content/user scripts and tabs.executeScript(). It is responsible for
 // maintaining any pending injections awaiting permission or the appropriate
 // load point, and injecting them when ready.
 class ScriptInjectionManager : public UserScriptSetManager::Observer {
  public:
   explicit ScriptInjectionManager(
       UserScriptSetManager* user_script_set_manager);
   virtual ~ScriptInjectionManager();
 
+  // Called by Dispatcher when the document element has been inserted.
+  void AfterDidCreateDocumentElement(content::RenderFrame* render_frame);
+
+  // Called by Dispatcher when the document DOM is ready.
+  void AfterDidFinishDocumentLoad(content::RenderFrame* render_frame);
+
   // Notifies that a new render view has been created.
   void OnRenderFrameCreated(content::RenderFrame* render_frame);
 
   // Removes pending injections of the unloaded extension.
   void OnExtensionUnloaded(const std::string& extension_id);
 
  private:
   // A RenderFrameObserver implementation which watches the various render
   // frames in order to notify the ScriptInjectionManager of different
   // document load states and IPCs.
@@ skipping 66 matching lines @@
 
   ScopedObserver<UserScriptSetManager, UserScriptSetManager::Observer>
       user_script_set_manager_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ScriptInjectionManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_SCRIPT_INJECTION_MANAGER_H_