Make an AddAll in ListModel.

ui/base/models/list_model_unittest.cc

Index: ui/base/models/list_model_unittest.cc
diff --git a/ui/base/models/list_model_unittest.cc b/ui/base/models/list_model_unittest.cc
index 56661671547e80687e72689c8703ec67043eab13..eab2bf05773b81123ac0ed89e40bfd2d32f974ad 100644
--- a/ui/base/models/list_model_unittest.cc
+++ b/ui/base/models/list_model_unittest.cc
@@ -7,6 +7,7 @@
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ui {
@@ -94,6 +95,34 @@ TEST_F(ListModelTest, Add) {
   EXPECT_EQ(1, model.GetItemAt(2)->id());
 }
 
+TEST_F(ListModelTest, AddAll) {
+  ListModel<FooItem> model;
+  model.AddObserver(this);
+
+  // Append FooItem(0)
+  model.Add(new FooItem(0));
+  ExpectCountsEqual(1, 0, 0, 0);
+
+  ScopedVector<FooItem> items;
+  items.push_back(new FooItem(1));
+  items.push_back(new FooItem(2));
+
+  // Append FooItem(1), FooItem(2)
+  model.AddAll(items.Pass());
+  ExpectCountsEqual(3, 0, 0, 0);
+
+  // Onwership of FooItems transferred.
+  EXPECT_TRUE(items.empty());
+
+  // Total 3 items in model.
+  EXPECT_EQ(3U, model.item_count());
+
+  // First one should be FooItem(0), followed by FooItem(1) and FooItem(2)
+  EXPECT_EQ(0, model.GetItemAt(0)->id());
+  EXPECT_EQ(1, model.GetItemAt(1)->id());
+  EXPECT_EQ(2, model.GetItemAt(2)->id());
+}
+
 TEST_F(ListModelTest, Remove) {
   ListModel<FooItem> model;
   model.AddObserver(this);