Adds a webstorePrivate method for silently installing extensions.

chrome/browser/extensions/crx_installer.cc

 // 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.
 
 #include "chrome/browser/extensions/crx_installer.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 38 matching lines @@
   std::set<std::string> ids;
   std::map<std::string, linked_ptr<CrxInstaller::WhitelistEntry> > entries;
 };
 
 static base::LazyInstance<Whitelist>
     g_whitelisted_install_data(base::LINKER_INITIALIZED);
 
 }  // namespace
 
 CrxInstaller::WhitelistEntry::WhitelistEntry()
-  : use_app_installed_bubble(false) {}
+    : use_app_installed_bubble(false),
+      skip_post_install_ui(false) {}
 CrxInstaller::WhitelistEntry::~WhitelistEntry() {}
 
 // static
 void CrxInstaller::SetWhitelistedInstallId(const std::string& id) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   g_whitelisted_install_data.Get().ids.insert(id);
 }
 
 // static
 void CrxInstaller::SetWhitelistEntry(const std::string& id,
@@ skipping 337 matching lines @@
       RemoveWhitelistEntry(extension_->id()));
   if (is_gallery_install() && entry.get() && original_manifest_.get()) {
     if (!(original_manifest_->Equals(entry->parsed_manifest.get()))) {
       ReportFailureFromUIThread(
           l10n_util::GetStringUTF8(IDS_EXTENSION_MANIFEST_INVALID));
       return;
     }
     whitelisted = true;
     if (entry->use_app_installed_bubble)
       client_->set_use_app_installed_bubble(true);
+    if (entry->skip_post_install_ui)
+      client_->set_skip_post_install_ui(true);
   }
 
   if (client_ &&
       (!allow_silent_install_ || !whitelisted)) {
     AddRef();  // Balanced in Proceed() and Abort().
     client_->ConfirmInstall(this, extension_.get());
   } else {
     if (!BrowserThread::PostTask(
             BrowserThread::FILE, FROM_HERE,
             base::Bind(&CrxInstaller::CompleteInstall, this)))
@@ skipping 166 matching lines @@
   // Some users (such as the download shelf) need to know when a
   // CRXInstaller is done.  Listening for the EXTENSION_* events
   // is problematic because they don't know anything about the
   // extension before it is unpacked, so they can not filter based
   // on the extension.
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_CRX_INSTALLER_DONE,
       content::Source<CrxInstaller>(this),
       content::NotificationService::NoDetails());
 }