Fix "crashed extension" infobar browser crashes....

chrome/browser/extensions/extensions_service.h

 // Copyright (c) 2009 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 CHROME_BROWSER_EXTENSIONS_EXTENSIONS_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSIONS_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/linked_ptr.h"
 #include "base/ref_counted.h"
 #include "base/task.h"
 #include "base/tuple.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/external_extension_provider.h"
 #include "chrome/browser/extensions/sandboxed_extension_unpacker.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/notification_registrar.h"
 
 class Browser;
 class DictionaryValue;
 class Extension;
 class ExtensionsServiceBackend;
 class ExtensionUpdater;
 class GURL;
 class MessageLoop;
 class PrefService;
 class Profile;
@@ skipping 10 matching lines @@
   virtual const ExtensionList* extensions() const = 0;
   virtual void UpdateExtension(const std::string& id, const FilePath& path) = 0;
   virtual Extension* GetExtensionById(const std::string& id) = 0;
   virtual void UpdateExtensionBlacklist(
     const std::vector<std::string>& blacklist) = 0;
 };
 
 // Manages installed and running Chromium extensions.
 class ExtensionsService
     : public ExtensionUpdateService,
+      public NotificationObserver,
       public base::RefCountedThreadSafe<ExtensionsService> {
  public:
 
   // The name of the directory inside the profile where extensions are
   // installed to.
   static const char* kInstallDirectoryName;
 
   // If auto-updates are turned on, default to running every 5 hours.
   static const int kDefaultUpdateFrequencySeconds = 60 * 60 * 5;
 
@@ skipping 137 matching lines @@
   }
 
   // Profile calls this when it is destroyed so that we know not to call it.
   void ProfileDestroyed() { profile_ = NULL; }
 
   ExtensionPrefs* extension_prefs() { return extension_prefs_.get(); }
 
   // Whether the extension service is ready.
   bool is_ready() { return ready_; }
 
+  // NotificationObserver
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
  private:
   // Look up an extension by ID, optionally including either or both of enabled
   // and disabled extensions.
   Extension* GetExtensionByIdInternal(const std::string& id,
                                       bool include_enabled,
                                       bool include_disabled);
 
   // The profile this ExtensionsService is part of.
   Profile* profile_;
 
@@ skipping 17 matching lines @@
 
   // Whether to notify users when they attempt to install an extension.
   bool show_extensions_prompts_;
 
   // The backend that will do IO on behalf of this instance.
   scoped_refptr<ExtensionsServiceBackend> backend_;
 
   // Is the service ready to go?
   bool ready_;
 
+  NotificationRegistrar registrar_;
+
   // Our extension updater, if updates are turned on.
   scoped_refptr<ExtensionUpdater> updater_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionsService);
 };
 
 // Implements IO for the ExtensionsService.
 // TODO(aa): This can probably move into the .cc file.
 class ExtensionsServiceBackend
     : public base::RefCountedThreadSafe<ExtensionsServiceBackend>,
@@ skipping 104 matching lines @@
 
   // A map of all external extension providers.
   typedef std::map<Extension::Location,
                    linked_ptr<ExternalExtensionProvider> > ProviderMap;
   ProviderMap external_extension_providers_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionsServiceBackend);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSIONS_SERVICE_H_