Adds a webstorePrivate method for silently installing extensions.

chrome/browser/extensions/extension_install_ui.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_INSTALL_UI_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_UI_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 98 matching lines @@
   virtual ~ExtensionInstallUI();
 
   // TODO(asargent) Normally we navigate to the new tab page when an app is
   // installed, but we're experimenting with instead showing a bubble when
   // an app is installed which points to the new tab button. This may become
   // the default behavior in the future.
   void set_use_app_installed_bubble(bool use_bubble) {
     use_app_installed_bubble_ = use_bubble;
   }
 
+  // Whether or not to show the default UI after completing the installation.

[Aaron Boodman, 2011/11/01 17:24:34]

Consider combining these two booleans flags into an enum (PostInstallAppUI {
LAUNCH, BUBBLE, NONE })

[jstritar, 2011/11/01 19:43:05]

The use_app_installed_bubble only applies to apps whereas the flag I added
applies to both, so I don't think it'll get us too much right now.

+  void set_skip_post_install_ui(bool is_bundle) {
+    skip_post_install_ui_ = is_bundle;
+  }
+
   // This is called by the installer to verify whether the installation should
   // proceed. This is declared virtual for testing.
   //
   // We *MUST* eventually call either Proceed() or Abort() on |delegate|.
   virtual void ConfirmInstall(Delegate* delegate, const Extension* extension);
 
   // 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|.
@@ skipping 78 matching lines @@
   // The type of prompt we are going to show.
   PromptType prompt_type_;
 
   // Keeps track of extension images being loaded on the File thread for the
   // purpose of showing the install UI.
   ImageLoadingTracker tracker_;
 
   // Whether to show an installed bubble on app install, or use the default
   // action of opening a new tab page.
   bool use_app_installed_bubble_;
+
+  // Whether or not to show the default UI after completing the installation.
+  bool skip_post_install_ui_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_UI_H_