content: Use base::MessageLoop.

content/browser/web_contents/web_drag_source_gtk.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/web_contents/web_drag_source_gtk.h"
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/nix/mime_util_xdg.h"
@@ skipping 43 matching lines @@
 
   signals_.Connect(drag_icon_, "expose-event",
                    G_CALLBACK(OnDragIconExposeThunk), this);
 }
 
 WebDragSourceGtk::~WebDragSourceGtk() {
   // Break the current drag, if any.
   if (drop_data_) {
     gtk_grab_add(drag_widget_);
     gtk_grab_remove(drag_widget_);
-    MessageLoopForUI::current()->RemoveObserver(this);
+    base::MessageLoopForUI::current()->RemoveObserver(this);
     drop_data_.reset();
   }
 
   gtk_widget_destroy(drag_widget_);
   gtk_widget_destroy(drag_icon_);
 }
 
 bool WebDragSourceGtk::StartDragging(const WebDropData& drop_data,
                                      WebDragOperationsMask allowed_ops,
                                      GdkEventButton* last_mouse_down,
@@ skipping 66 matching lines @@
   gtk_target_list_unref(list);
 
   // Sometimes the drag fails to start; |context| will be NULL and we won't
   // get a drag-end signal.
   if (!drag_context_) {
     drag_failed_ = true;
     drop_data_.reset();
     return false;
   }
 
-  MessageLoopForUI::current()->AddObserver(this);
+  base::MessageLoopForUI::current()->AddObserver(this);
   return true;
 }
 
 void WebDragSourceGtk::WillProcessEvent(GdkEvent* event) {
   // No-op.
 }
 
 void WebDragSourceGtk::DidProcessEvent(GdkEvent* event) {
   if (event->type != GDK_MOTION_NOTIFY)
     return;
@@ skipping 191 matching lines @@
   }
 }
 
 void WebDragSourceGtk::OnDragEnd(GtkWidget* sender,
                                  GdkDragContext* drag_context) {
   if (drag_pixbuf_) {
     g_object_unref(drag_pixbuf_);
     drag_pixbuf_ = NULL;
   }
 
-  MessageLoopForUI::current()->RemoveObserver(this);
+  base::MessageLoopForUI::current()->RemoveObserver(this);
 
   if (!download_url_.is_empty()) {
     gdk_property_delete(drag_context->source_window,
                         ui::GetAtomForTarget(ui::DIRECT_SAVE_FILE));
   }
 
   if (!drag_failed_) {
     gfx::Point root = ui::ScreenPoint(GetContentNativeView());
     gfx::Point client = ui::ClientPoint(GetContentNativeView());
 
@@ skipping 21 matching lines @@
   cairo_clip(cr);
   cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
   gdk_cairo_set_source_pixbuf(cr, drag_pixbuf_, 0, 0);
   cairo_paint(cr);
   cairo_destroy(cr);
 
   return TRUE;
 }
 
 }  // namespace content