Fix crashes related to the extension uninstall dialog.

chrome/browser/extensions/extension_uninstall_dialog.h

 // Copyright (c) 2011 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_EXTENSION_UNINSTALL_DIALOG_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
 #pragma once
 
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "chrome/browser/extensions/image_loading_tracker.h"
-#include "third_party/skia/include/core/SkBitmap.h"
+#include "chrome/browser/extensions/extension_uninstall_ui.h"
 
-class MessageLoop;
+class Extension;
 class Profile;
+class SkBitmap;
 
-class ExtensionUninstallDialog : public ImageLoadingTracker::Observer {
+// The common base class for connecting the ExtensionUninstallUI to
+// platform-specific UI.
+class ExtensionUninstallDialog {
  public:
-  class Delegate {
-   public:
-    // We call this method to signal that the uninstallation should continue.
-    virtual void ExtensionDialogAccepted() = 0;
-
-    // We call this method to signal that the uninstallation should stop.
-    virtual void ExtensionDialogCanceled() = 0;
-
-   protected:
-    virtual ~Delegate() {}
-  };
-
-  explicit ExtensionUninstallDialog(Profile* profile);
+  ExtensionUninstallDialog(Profile* profile,
+                           ExtensionUninstallUI::Delegate* delegate,
+                           const Extension* extension,
+                           SkBitmap* icon);
   virtual ~ExtensionUninstallDialog();
 
-  // This is called by the extensions management page to verify whether the
-  // uninstallation should proceed.
-  // Starts the process of showing a confirmation UI, which is split into two.
-  // 1) Set off a 'load icon' task.
-  // 2) Handle the load icon response and show the UI (OnImageLoaded).
-  void ConfirmUninstall(Delegate* delegate, const Extension* extension);
-
- private:
-  // Creates an appropriate ExtensionUninstallDialog for the platform.
-  static void Show(Profile* profile,
-                   Delegate* delegate,
-                   const Extension* extension,
-                   SkBitmap* icon);
-
-  // Sets the icon that will be used in any UI. If |icon| is NULL, or contains
-  // an empty bitmap, then a default icon will be used instead.
-  void SetIcon(SkBitmap* icon);
-
-  // ImageLoadingTracker::Observer:
-  virtual void OnImageLoaded(SkBitmap* image,
-                             const ExtensionResource& resource,
-                             int index) OVERRIDE;
-
+ protected:
   Profile* profile_;
-  MessageLoop* ui_loop_;
-
-  // The delegate we will call Accepted/Canceled on after confirmation UI.
-  Delegate* delegate_;
-
-  // The extension we are showing the UI for.
+  ExtensionUninstallUI::Delegate* delegate_;
   const Extension* extension_;
-
-  // Keeps track of extension images being loaded on the File thread for the
-  // purpose of showing the install UI.
-  ImageLoadingTracker tracker_;
-
-  // The extensions icon.
-  SkBitmap icon_;
-
-  DISALLOW_COPY_AND_ASSIGN(ExtensionUninstallDialog);
+  SkBitmap* icon_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_