Remove unused WEBKIT_DEPRECATED thread

content/browser/in_process_webkit/webkit_thread.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 "content/browser/in_process_webkit/webkit_thread.h"
-
-#include "base/command_line.h"
-#include "content/browser/in_process_webkit/browser_webkitplatformsupport_impl.h"
-#include "content/public/common/content_switches.h"
-#include "third_party/WebKit/public/web/WebKit.h"
-#include "third_party/WebKit/public/web/WebSecurityOrigin.h"
-#include "webkit/glue/webkit_glue.h"
-
-namespace content {
-
-WebKitThread::WebKitThread() {
-}
-
-// This happens on the UI thread after the IO thread has been shut down.
-WebKitThread::~WebKitThread() {
-  // We can't just check CurrentlyOn(BrowserThread::UI) because in unit tests,
-  // MessageLoop::Current is sometimes NULL and other times valid and there's
-  // no BrowserThread object.  Can't check that CurrentlyOn is not IO since
-  // some unit tests set that BrowserThread for other checks.
-  DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::WEBKIT_DEPRECATED));
-}
-
-void WebKitThread::Initialize() {
-  DCHECK(!webkit_thread_.get());
-
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess)) {
-    // TODO(joth): As this cannot work in single process mode use of the
-    // webkit thread is deprecated; see http://crbug.com/106839.
-    return;
-  }
-
-  webkit_thread_.reset(new InternalWebKitThread);
-  bool started = webkit_thread_->Start();
-  DCHECK(started);
-}
-
-WebKitThread::InternalWebKitThread::InternalWebKitThread()
-    : BrowserThreadImpl(BrowserThread::WEBKIT_DEPRECATED) {
-}
-
-WebKitThread::InternalWebKitThread::~InternalWebKitThread() {
-  Stop();
-}
-
-void WebKitThread::InternalWebKitThread::Init() {
-  DCHECK(!webkit_platform_support_.get());
-  webkit_platform_support_.reset(new BrowserWebKitPlatformSupportImpl);
-  WebKit::initializeWithoutV8(webkit_platform_support_.get());
-  webkit_glue::EnableWebCoreLogChannels(
-      CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
-          switches::kWebCoreLogChannels));
-  // Exercise WebSecurityOrigin to get its underlying statics initialized.
-  // TODO(michaeln): remove this when the following is landed.
-  // https://bugs.webkit.org/show_bug.cgi?id=61145
-  WebKit::WebSecurityOrigin::create(GURL("http://chromium.org"));
-
-  // If possible, post initialization tasks to this thread (rather than doing
-  // them now) so we don't block the UI thread any longer than we have to.
-}
-
-void WebKitThread::InternalWebKitThread::CleanUp() {
-  DCHECK(webkit_platform_support_.get());
-  WebKit::shutdownWithoutV8();
-  // Delete BrowserWebKitPlatformSupportImpl now while on the same thread that
-  // constructed it. (This prevents the WebKit shared timer from being destroyed
-  // on a different thread than the one using it.)
-  webkit_platform_support_.reset();
-}
-
-}  // namespace content