content: Split web_drag_dest_gtk.cc into chrome/ and content/ parts.

chrome/browser/ui/gtk/tabs/tab_strip_gtk.cc

 // Copyright (c) 2011 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/ui/gtk/tabs/tab_strip_gtk.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/i18n/rtl.h"
@@ skipping 16 matching lines @@
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/common/notification_service.h"
 #include "grit/theme_resources.h"
 #include "grit/theme_resources_standard.h"
 #include "grit/ui_resources.h"
 #include "ui/base/animation/animation_delegate.h"
 #include "ui/base/animation/slide_animation.h"
 #include "ui/base/dragdrop/gtk_dnd_util.h"
+#include "ui/base/gtk/gtk_screen_utils.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/gtk_util.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/point.h"
 
 namespace {
 
 const int kDefaultAnimationDurationMs = 100;
 const int kResizeLayoutAnimationDurationMs = 166;
 const int kReorderAnimationDurationMs = 166;
@@ skipping 1750 matching lines @@
   CreateContainer();
   drop_arrow = GetDropArrowImage(point_down);
 }
 
 TabStripGtk::DropInfo::~DropInfo() {
   DestroyContainer();
 }
 
 gboolean TabStripGtk::DropInfo::OnExposeEvent(GtkWidget* widget,
                                               GdkEventExpose* event) {
-  if (gtk_util::IsScreenComposited()) {
+  if (ui::IsScreenComposited()) {
     SetContainerTransparency();
   } else {
     SetContainerShapeMask();
   }
 
   gdk_pixbuf_render_to_drawable(drop_arrow,
                                 container->window,
                                 0, 0, 0,
                                 0, 0,
                                 drop_indicator_width,
@@ skipping 368 matching lines @@
 
   // Let the middle mouse button initiate clicks as well.
   gtk_util::SetButtonTriggersNavigation(button->widget());
   g_signal_connect(button->widget(), "clicked",
                    G_CALLBACK(OnNewTabClickedThunk), this);
   gtk_widget_set_can_focus(button->widget(), FALSE);
   gtk_fixed_put(GTK_FIXED(tabstrip_.get()), button->widget(), 0, 0);
 
   return button;
 }