Move the concept of Activation to the Shell.

ui/views/test/views_test_base.cc

Index: ui/views/test/views_test_base.cc
===================================================================
--- ui/views/test/views_test_base.cc	(revision 114022)
+++ ui/views/test/views_test_base.cc	(working copy)
@@ -10,6 +10,7 @@
 
 #if defined(USE_AURA)
 #include "ui/aura/root_window.h"
+#include "ui/aura/test/test_activation_client.h"
 #include "ui/aura/test/test_stacking_client.h"
 #endif
 
@@ -22,6 +23,7 @@
   OleInitialize(NULL);
 #endif
 #if defined(USE_AURA)
+  test_activation_client_.reset(new aura::test::TestActivationClient);
   new aura::test::TestStackingClient;
 #endif
 }