Rename GetRootWindow() -> GetPrimaryRootWindow()

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 cab4dae9d39838780b392a1ddc0eaf57e7a61690..9c14d7c94e313639bc9c8019b460310f759c8262 100644
--- a/chrome/test/base/view_event_test_base.cc
+++ b/chrome/test/base/view_event_test_base.cc
@@ -87,7 +87,7 @@ void ViewEventTestBase::SetUp() {
   ash::Shell::CreateInstance(NULL);
   // The shell runs with a locked screen in tests, so we must clear the event
   // client so it doesn't interfere with event propagation.
-  aura::client::SetEventClient(ash::Shell::GetInstance()->GetRootWindow(),
+  aura::client::SetEventClient(ash::Shell::GetPrimaryRootWindow(),
                                NULL);
 #endif
   window_ = views::Widget::CreateWindow(this);