Implement features in NativeViewHostAura for scroll end effect

ui/views/controls/native/native_view_host_unittest.cc

Index: ui/views/controls/native/native_view_host_unittest.cc
diff --git a/ui/views/controls/native/native_view_host_unittest.cc b/ui/views/controls/native/native_view_host_unittest.cc
index f30980bca8bad31eb9c4e2b9a46d89f7ae317892..30a8eb795cf8722dfe8eb78d4901c999ac08a1bb 100644
--- a/ui/views/controls/native/native_view_host_unittest.cc
+++ b/ui/views/controls/native/native_view_host_unittest.cc
@@ -9,6 +9,7 @@
 #endif
 
 #include "base/basictypes.h"
+#include "base/debug/stack_trace.h"

[xiyuan, 2013/10/10 18:00:26]

nit: seems not used

[rharrison, 2013/10/10 18:04:36]

Done.

 #include "base/memory/scoped_ptr.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/widget/widget.h"
@@ -148,13 +149,25 @@ TEST_F(NativeViewHostTest, NativeViewHierarchyChanged) {
                                               test_view,
                                               host));
 
+#if defined(USE_AURA)
+  // One notification is generated from inserting the clipping window into the
+  // hierarchy.
+  EXPECT_EQ(1, test_view->notification_count());
+#else
   EXPECT_EQ(0, test_view->notification_count());
+#endif
   test_view->ResetCount();
 
   // Detaching should send a NativeViewHierarchyChanged() notification and
   // change the parent.
   host->Detach();
+#if defined(USE_AURA)
+  // The clipping window is removed on detach, so there is an extra hiearchy
+  // change.
+  EXPECT_EQ(2, test_view->notification_count());
+#else
   EXPECT_EQ(1, test_view->notification_count());
+#endif
   EXPECT_NE(toplevel()->GetNativeView(),
             GetNativeParent(child->GetNativeView()));
   test_view->ResetCount();
@@ -163,8 +176,15 @@ TEST_F(NativeViewHostTest, NativeViewHierarchyChanged) {
   // reset the parent.
   host->Attach(child->GetNativeView());
   EXPECT_EQ(1, test_view->notification_count());
+#if defined(USE_AURA)
+  // There is a clipping window inserted above the native view that needs to be
+  // accounted for when looking at the relationship between the native views..
+  EXPECT_EQ(toplevel()->GetNativeView(),
+            GetNativeParent(GetNativeParent(child->GetNativeView())));
+#else
   EXPECT_EQ(toplevel()->GetNativeView(),
             GetNativeParent(child->GetNativeView()));
+#endif
 }
 
 // Verifies ViewHierarchyChanged handles NativeViewHost remove, add and move