Change variable name to avoid scoping issues.

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

Index: chrome/browser/ui/gtk/tabs/tab_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/tabs/tab_gtk.cc	(revision 147038)
+++ chrome/browser/ui/gtk/tabs/tab_gtk.cc	(working copy)
@@ -326,6 +326,11 @@
 }
 
 void TabGtk::StartDragging(gfx::Point drag_offset) {
+  // If the drag is processed after the selection change it's possible
+  // that the tab has been deselected, in which case we don't want to drag.
+  if (!IsSelected())
+    return;
+
   CreateDragWidget();
 
   GtkTargetList* list = ui::GetTargetListFromCodeMask(ui::CHROME_TAB);