Revert "Currently, base/timer.cc calls PostTask with FROM_HERE as the Location,

chrome/browser/ui/gtk/tabs/dragged_tab_controller_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/dragged_tab_controller_gtk.h"
 
 #include <algorithm>
 
 #include "base/callback_old.h"
 #include "base/i18n/rtl.h"
@@ skipping 227 matching lines @@
     // Make sure we're fully detached from whatever TabStrip we're attached to
     // (if any).
     if (attached_tabstrip_)
       Detach();
 
     if (target_tabstrip)
       Attach(target_tabstrip, screen_point);
   }
 
   if (!target_tabstrip) {
-    bring_to_front_timer_.Start(FROM_HERE,
+    bring_to_front_timer_.Start(
         base::TimeDelta::FromMilliseconds(kBringToFrontDelay), this,
         &DraggedTabControllerGtk::BringWindowUnderMouseToFront);
   }
 
   MoveTab(screen_point);
 }
 
 void DraggedTabControllerGtk::MoveTab(const gfx::Point& screen_point) {
   gfx::Point dragged_tab_point = GetDraggedTabPoint(screen_point);
 
@@ skipping 512 matching lines @@
     gfx::NativeView dragged_tab = dragged_tab_->widget();
     dock_windows_.insert(dragged_tab);
     window = DockInfo::GetLocalProcessWindowAtPoint(GetCursorScreenPoint(),
                                                     dock_windows_);
     dock_windows_.erase(dragged_tab);
   }
 
   if (window)
     gtk_window_present(GTK_WINDOW(window));
 }