Update a few JumpList comments

chrome/browser/win/jumplist.cc

 // Copyright 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/win/jumplist.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 55 matching lines @@
 
 // The delay before updating the JumpList to prevent update storms.
 constexpr base::TimeDelta kDelayForJumplistUpdate =
     base::TimeDelta::FromMilliseconds(3500);
 
 // The maximum allowed time for JumpListUpdater::BeginUpdate. Updates taking
 // longer than this are discarded to prevent bogging down slow machines.
 constexpr base::TimeDelta kTimeOutForJumplistUpdate =
     base::TimeDelta::FromMilliseconds(500);
 
-// Append the common switches to each shell link.
+// Appends the common switches to each shell link.
 void AppendCommonSwitches(ShellLinkItem* shell_link) {
   const char* kSwitchNames[] = { switches::kUserDataDir };
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
   shell_link->GetCommandLine()->CopySwitchesFrom(command_line,
                                                  kSwitchNames,
                                                  arraysize(kSwitchNames));
 }
 
-// Create a ShellLinkItem preloaded with common switches.
+// Creates a ShellLinkItem preloaded with common switches.
 scoped_refptr<ShellLinkItem> CreateShellLink() {
   scoped_refptr<ShellLinkItem> link(new ShellLinkItem);
   AppendCommonSwitches(link.get());
   return link;
 }
 
 // Creates a temporary icon file to be shown in JumpList.
 bool CreateIconFile(const gfx::ImageSkia& image_skia,
                     const base::FilePath& icon_dir,
                     base::FilePath* icon_path) {
@@ skipping 400 matching lines @@
 
   // Create a list of ShellLinkItems from the "Recently Closed" pages.
   // As noted above, we create a ShellLinkItem objects with the following
   // parameters.
   // * arguments
   //   The last URL of the tab object.
   // * title
   //   The title of the last URL.
   // * icon
   //   An empty string. This value is to be updated in OnFaviconDataAvailable().
-  // This code is copied from
-  // RecentlyClosedTabsHandler::TabRestoreServiceChanged() to emulate it.
   const int kRecentlyClosedCount = 3;
   sessions::TabRestoreService* tab_restore_service =
       TabRestoreServiceFactory::GetForProfile(profile_);
 
   {
     JumpListData* data = &jumplist_data_->data;
     base::AutoLock auto_lock(data->list_lock_);
     data->recently_closed_pages_.clear();
 
     for (const auto& entry : tab_restore_service->entries()) {
@@ skipping 187 matching lines @@
 void JumpList::TopSitesLoaded(history::TopSites* top_sites) {
 }
 
 void JumpList::TopSitesChanged(history::TopSites* top_sites,
                                ChangeReason change_reason) {
   top_sites->GetMostVisitedURLs(
       base::Bind(&JumpList::OnMostVisitedURLsAvailable,
                  weak_ptr_factory_.GetWeakPtr()),
       false);
 }