Remove logging.h from cc files that don't use it.

webkit/tools/test_shell/webview_host_gtk.cc

 // Copyright (c) 2006-2008 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 <gtk/gtk.h>
 
 #include "webkit/tools/test_shell/webview_host.h"
 
 #include "base/gfx/rect.h"
 #include "base/gfx/size.h"
-#include "base/logging.h"
 #include "skia/ext/platform_canvas.h"
 #include "webkit/glue/webinputevent.h"
 #include "webkit/glue/webview.h"
 
 // static
 WebViewHost* WebViewHost::Create(GtkWidget* parent_view,
                                  WebViewDelegate* delegate,
                                  const WebPreferences& prefs) {
   WebViewHost* host = new WebViewHost();
 
   host->view_ = WebWidgetHost::CreateWidget(parent_view, host);
   g_object_set_data(G_OBJECT(host->view_), "webwidgethost", host);
 
   host->webwidget_ = WebView::Create(delegate, prefs);
   host->webwidget_->Layout();
 
   return host;
 }
 
 WebView* WebViewHost::webview() const {
   return static_cast<WebView*>(webwidget_);
 }