Re-home the global MessageCenter to support Ash+Win environments.

chrome/test/base/view_event_test_base.cc

Index: chrome/test/base/view_event_test_base.cc
diff --git a/chrome/test/base/view_event_test_base.cc b/chrome/test/base/view_event_test_base.cc
index cbf1f5e2cd9666a5c590767c43ee4f494f29152a..91b1855a917392c5bbfbab0d8131abf6d8ade72d 100644
--- a/chrome/test/base/view_event_test_base.cc
+++ b/chrome/test/base/view_event_test_base.cc
@@ -18,6 +18,10 @@
 #include "ui/views/widget/desktop_aura/desktop_screen.h"
 #include "ui/views/widget/widget.h"
 
+#if defined(ENABLE_MESSAGE_CENTER)
+#include "ui/message_center/message_center.h"
+#endif
+
 #if defined(USE_ASH)
 #include "ash/shell.h"
 #include "ash/test/test_shell_delegate.h"
@@ -98,6 +102,11 @@ void ViewEventTestBase::SetUp() {
   gfx::Screen::SetScreenInstance(
       gfx::SCREEN_TYPE_NATIVE, views::CreateDesktopScreen());
 #else
+#if defined(ENABLE_MESSAGE_CENTER)
+  // Ash Shell can't just live on its own without a browser process, we need to
+  // also create the message center.
+  message_center::MessageCenter::Initialize();
+#endif
   ash::Shell::CreateInstance(new ash::test::TestShellDelegate());
   context = ash::Shell::GetPrimaryRootWindow();
 #endif
@@ -126,6 +135,11 @@ void ViewEventTestBase::TearDown() {
 #if defined(OS_WIN)
 #else
   ash::Shell::DeleteInstance();
+#if defined(ENABLE_MESSAGE_CENTER)
+  // Ash Shell can't just live on its own without a browser process, we need to
+  // also shut down the message center.
+  message_center::MessageCenter::Shutdown();
+#endif
   aura::Env::DeleteInstance();
 #endif
 #elif defined(USE_AURA)