New post-sideload UI:

chrome/browser/extensions/extension_install_prompt.h

 // Copyright (c) 2012 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_INSTALL_PROMPT_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 35 matching lines @@
 class ExtensionInstallPrompt : public ImageLoadingTracker::Observer,
                                public OAuth2MintTokenFlow::Delegate {
  public:
   enum PromptType {
     UNSET_PROMPT_TYPE = -1,
     INSTALL_PROMPT = 0,
     INLINE_INSTALL_PROMPT,
     BUNDLE_INSTALL_PROMPT,
     RE_ENABLE_PROMPT,
     PERMISSIONS_PROMPT,
+    EXTERNAL_INSTALL_PROMPT,
     NUM_PROMPT_TYPES
   };
 
   // Extra information needed to display an installation or uninstallation
   // prompt. Gets populated with raw data and exposes getters for formatted
   // strings so that the GTK/views/Cocoa install dialogs don't have to repeat
   // that logic.
   class Prompt {
    public:
     Prompt(Profile* profile, PromptType type);
@@ skipping 160 matching lines @@
                               const extensions::Extension* extension,
                               const ShowDialogCallback& show_dialog_callback);
 
   // This is called by the app handler launcher to verify whether the app
   // should be re-enabled. This is declared virtual for testing.
   //
   // We *MUST* eventually call either Proceed() or Abort() on |delegate|.
   virtual void ConfirmReEnable(Delegate* delegate,
                                const extensions::Extension* extension);
 
+  virtual void ConfirmExternalInstall(Delegate* delegate,

[Jeffrey Yasskin, 2012/10/13 21:17:35]

Comment this function. It might make sense to refactor the comments for the
Confirm*() functions so they have less duplicated text, after which this
function might not need its own comment.

[Matt Perry, 2012/10/15 19:13:38]

Done.

+                                      const extensions::Extension* extension);
+
   // This is called by the extension permissions API to verify whether an
   // extension may be granted additional permissions.
   //
   // We *MUST* eventually call either Proceed() or Abort() on |delegate|.
   virtual void ConfirmPermissions(Delegate* delegate,
                                   const extensions::Extension* extension,
                                   const extensions::PermissionSet* permissions);
 
   // This is called by the extension identity API to verify whether an
   // extension can be granted an OAuth2 token.
@@ skipping 90 matching lines @@
 
 // Creates an ExtensionInstallPrompt from |browser|. Caller assumes ownership.
 // TODO(beng): remove this once various extensions types are weaned from
 //             Browser.
 ExtensionInstallPrompt* CreateExtensionInstallPromptWithBrowser(
     Browser* browser);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_