Move more dnd related files to ui/base

ui/base/dragdrop/os_exchange_data_provider_gtk.cc

Index: ui/base/dragdrop/os_exchange_data_provider_gtk.cc
===================================================================
--- ui/base/dragdrop/os_exchange_data_provider_gtk.cc	(revision 71798)
+++ ui/base/dragdrop/os_exchange_data_provider_gtk.cc	(working copy)
@@ -6,10 +6,10 @@
 
 #include <algorithm>
 
-#include "app/gtk_dnd_util.h"
 #include "base/file_path.h"
 #include "base/utf_string_conversions.h"
 #include "net/base/net_util.h"
+#include "ui/base/dragdrop/gtk_dnd_util.h"
 
 namespace ui {
 
@@ -56,7 +56,7 @@
     gtk_target_list_add_uri_targets(targets, OSExchangeData::URL);
     gtk_target_list_add(
         targets,
-        gtk_dnd_util::GetAtomForTarget(gtk_dnd_util::CHROME_NAMED_URL),
+        ui::GetAtomForTarget(ui::CHROME_NAMED_URL),
         0,
         OSExchangeData::URL);
   }
@@ -90,7 +90,7 @@
     pickle.WriteString(url_.spec());
     gtk_selection_data_set(
         selection,
-        gtk_dnd_util::GetAtomForTarget(gtk_dnd_util::CHROME_NAMED_URL),
+        ui::GetAtomForTarget(ui::CHROME_NAMED_URL),
         8,
         reinterpret_cast<const guchar*>(pickle.data()),
         pickle.size());