views/examples: Make SingleSplitViewExample a listener of SingleSplitView control.

views/examples/single_split_view_example.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 "views/examples/single_split_view_example.h"
 
 #include "views/controls/single_split_view.h"
 #include "views/layout/grid_layout.h"
 
 namespace {
@@ skipping 51 matching lines @@
 
 void SingleSplitViewExample::CreateExampleView(views::View* container) {
   SplittedView* splitted_view_1 = new SplittedView;
   SplittedView* splitted_view_2 = new SplittedView;
 
   splitted_view_1->SetColor(SK_ColorYELLOW, SK_ColorCYAN);
 
   single_split_view_ = new views::SingleSplitView(
       splitted_view_1, splitted_view_2,
       views::SingleSplitView::HORIZONTAL_SPLIT,
-      NULL);
+      this);
 
   views::GridLayout* layout = new views::GridLayout(container);
   container->SetLayoutManager(layout);
 
   views::ColumnSet* column_set = layout->AddColumnSet(0);
   column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
                         views::GridLayout::USE_PREF, 0, 0);
   layout->StartRow(1, 0);
   layout->AddView(single_split_view_);
 }
 
+bool SingleSplitViewExample::SplitHandleMoved(views::SingleSplitView* sender) {
+  PrintStatus("Splitter moved");
+  return true;
+}
+
 }  // namespace examples