Graceful handling of extension process crashes

chrome/browser/extensions/extension_view.h

 // Copyright (c) 2006-2009 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_EXTENSION_VIEW_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_H_
 
 #include "build/build_config.h"
 
 #include "base/scoped_ptr.h"
@@ skipping 38 matching lines @@
   // Sets the container for this view.
   void SetContainer(ExtensionContainer* container) { container_ = container; }
 
   // Overridden from views::NativeViewHost:
   virtual void SetVisible(bool is_visible);
   virtual void DidChangeBounds(const gfx::Rect& previous,
                                const gfx::Rect& current);
   virtual void ViewHierarchyChanged(bool is_add,
                                     views::View *parent, views::View *child);
 
+  // Call after extension process crash to re-initialize view, so that
+  // extension content can be rendered again.
+  void RecoverCrashedExtension();
+
  private:
   friend class ExtensionHost;
 
+  // Initializes the RenderWidgetHostView for this object.
+  void CreateWidgetHostView();
+
   // We wait to show the ExtensionView until several things have loaded.
   void ShowIfCompletelyLoaded();
 
+  // Restore object to initial state. Called on shutdown or after a renderer
+  // crash.
+  void CleanUp();
+
   // The running extension instance that we're displaying.
   // Note that host_ owns view
   ExtensionHost* host_;
 
   // The browser window that this view is in.
   Browser* browser_;
 
   // True if we've been initialized.
   bool initialized_;
 
   // The background the view should have once it is initialized. This is set
   // when the view has a custom background, but hasn't been initialized yet.
   SkBitmap pending_background_;
 
   // What we should set the preferred width to once the ExtensionView has
   // loaded.
   int pending_preferred_width_;
 
   // The container this view is in (not necessarily its direct superview).
   // Note: the view does not own its container.
   ExtensionContainer* container_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionView);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_H_