Garbage collect extensions only if there are no pending extension installs that could still be usin…

chrome/browser/extensions/pending_extension_manager.cc

 // 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.
 
 #include "chrome/browser/extensions/pending_extension_manager.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
@@ skipping 55 matching lines @@
   for (iter = pending_extension_list_.begin();
        iter != pending_extension_list_.end();
        ++iter) {
     if (id == iter->id())
       return true;
   }
 
   return false;
 }
 
+bool PendingExtensionManager::HasPendingExtensions() const {
+  return !pending_extension_list_.empty();
+}
+
 bool PendingExtensionManager::HasPendingExtensionFromSync() const {
   PendingExtensionList::const_iterator iter;
   for (iter = pending_extension_list_.begin();
        iter != pending_extension_list_.end();
        ++iter) {
     if (iter->is_from_sync())
       return true;
   }
 
   return false;
@@ skipping 165 matching lines @@
 
   return true;
 }
 
 void PendingExtensionManager::AddForTesting(
     const PendingExtensionInfo& pending_extension_info) {
   pending_extension_list_.push_back(pending_extension_info);
 }
 
 }  // namespace extensions