Couple of tweaks for tables:

ui/views/examples/table_example.cc

 // Copyright (c) 2012 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 "ui/views/examples/table_example.h"
 
 #include <vector>
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/views/controls/button/checkbox.h"
+#include "ui/views/controls/table/group_table_model.h"
 #include "ui/views/layout/grid_layout.h"
 
 namespace views {
 namespace examples {
 
 namespace {
 
 ui::TableColumn TestTableColumn(int id, const std::string& title) {
   ui::TableColumn column;
   column.id = id;
@@ skipping 35 matching lines @@
   GridLayout* layout = new GridLayout(container);
   container->SetLayoutManager(layout);
 
   std::vector<ui::TableColumn> columns;
   columns.push_back(TestTableColumn(0, "Fruit"));
   columns.push_back(TestTableColumn(1, "Color"));
   columns.push_back(TestTableColumn(2, "Origin"));
   columns.push_back(TestTableColumn(3, "Price"));
   columns.back().alignment = ui::TableColumn::RIGHT;
   table_ = new TableView(this, columns, ICON_AND_TEXT, true, true, true);
+  table_->SetGrouper(this);
   table_->SetObserver(this);
   icon1_.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
   icon1_.allocPixels();
   SkCanvas canvas1(icon1_);
   canvas1.drawColor(SK_ColorRED);
 
   icon2_.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
   icon2_.allocPixels();
   SkCanvas canvas2(icon2_);
   canvas2.drawColor(SK_ColorBLUE);
@@ skipping 36 matching lines @@
   };
   return ASCIIToUTF16(cells[row % 5][column_id]);
 }
 
 gfx::ImageSkia TableExample::GetIcon(int row) {
   return row % 2 ? gfx::ImageSkia(icon1_) : gfx::ImageSkia(icon2_);
 }
 
 void TableExample::SetObserver(ui::TableModelObserver* observer) {}
 
+void TableExample::GetGroupRange(int model_index, GroupRange* range) {
+  if (model_index < 2) {
+    range->start = 0;
+    range->length = 2;
+  } else if (model_index > 6) {
+    range->start = 7;
+    range->length = 3;
+  } else {
+    range->start = model_index;
+    range->length = 1;
+  }
+}
+
 void TableExample::OnSelectionChanged() {
   PrintStatus("Selected: %s",
               UTF16ToASCII(GetText(table_->FirstSelectedRow(), 0)).c_str());
 }
 
 void TableExample::OnDoubleClick() {
   PrintStatus("Double Click: %s",
               UTF16ToASCII(GetText(table_->FirstSelectedRow(), 0)).c_str());
 }
 
@@ skipping 15 matching lines @@
     show = column3_visible_checkbox_->checked();
   } else if (sender == column4_visible_checkbox_) {
     index = 3;
     show = column4_visible_checkbox_->checked();
   }
   table_->SetColumnVisibility(index, show);
 }
 
 }  // namespace examples
 }  // namespace views