Splits TooltipManager so that it can be ported and stubs out the GTK...

views/widget/widget_gtk.cc

Index: views/widget/widget_gtk.cc
===================================================================
--- views/widget/widget_gtk.cc	(revision 17063)
+++ views/widget/widget_gtk.cc	(working copy)
@@ -7,6 +7,7 @@
 #include "base/compiler_specific.h"
 #include "views/fill_layout.h"
 #include "views/widget/root_view.h"
+#include "views/widget/tooltip_manager_gtk.h"
 #include "views/window/window_gtk.h"
 
 namespace views {
@@ -152,6 +153,8 @@
   // g_signal_connect(G_OBJECT(widget_), "drag_data_received",
   //                  G_CALLBACK(drag_data_received_event_cb), NULL);
 
+  tooltip_manager_.reset(new TooltipManagerGtk(this));
+
   if (type_ == TYPE_CHILD) {
     WidgetGtk* parent_widget = GetViewForNative(parent);
     parent_widget->AddChild(widget_);
@@ -301,8 +304,7 @@
 }
 
 TooltipManager* WidgetGtk::GetTooltipManager() {
-  NOTIMPLEMENTED();
-  return NULL;
+  return tooltip_manager_.get();
 }
 
 bool WidgetGtk::GetAccelerator(int cmd_id, Accelerator* accelerator) {