Fix leak of GtkWidgets in NativeViewHost, and in doing so fix a crash on shut...

chrome/browser/views/location_bar_view.cc

Index: chrome/browser/views/location_bar_view.cc
===================================================================
--- chrome/browser/views/location_bar_view.cc	(revision 22173)
+++ chrome/browser/views/location_bar_view.cc	(working copy)
@@ -130,6 +130,12 @@
 }
 
 LocationBarView::~LocationBarView() {
+#if defined(OS_LINUX)
+  // We must release the ref that the NativeViewHost has on the
+  // AutocompleteEditViewGtk, otherwise its internal OwnedWidgetGtk will
+  // complain about its refcount not being 1 as it is destroyed.
+  location_entry_view_->Detach();
+#endif
   DeletePageActionViews();
 }