webkit: Remove use of ALLOW_THIS_IN_INITIALIZER_LIST.

webkit/tools/test_shell/webwidget_host_mac.mm

 // 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "webkit/tools/test_shell/webwidget_host.h"
 
 #include "base/logging.h"
 #include "skia/ext/platform_canvas.h"
@@ skipping 132 matching lines @@
 
 void WebWidgetHost::DiscardBackingStore() {
   canvas_.reset();
 }
 
 WebWidgetHost::WebWidgetHost()
     : view_(NULL),
       webwidget_(NULL),
       scroll_dx_(0),
       scroll_dy_(0),
-      ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
+      weak_factory_(this) {
   set_painting(false);
 }
 
 WebWidgetHost::~WebWidgetHost() {
   // ui::SetWindowUserData(hwnd_, 0);
 
   webwidget_->close();
 }
 
 void WebWidgetHost::UpdatePaintRect(const gfx::Rect& rect) {
@@ skipping 113 matching lines @@
 void WebWidgetHost::PaintRect(const gfx::Rect& rect) {
 #ifndef NDEBUG
   DCHECK(!painting_);
 #endif
   DCHECK(canvas_.get());
 
   set_painting(true);
   webwidget_->paint(webkit_glue::ToWebCanvas(canvas_.get()), rect);
   set_painting(false);
 }