Fix race in BrowserAccessibilityManagerWin creation.

content/test/test_render_view_host.cc

Index: content/test/test_render_view_host.cc
diff --git a/content/test/test_render_view_host.cc b/content/test/test_render_view_host.cc
index 975c174e99aa94ae187ef14171a77659c5464a2f..2a0685e22db566796ca139f995500f78c7bfef92 100644
--- a/content/test/test_render_view_host.cc
+++ b/content/test/test_render_view_host.cc
@@ -194,8 +194,12 @@ void TestRenderWidgetHostView::UnlockMouse() {
 }
 
 #if defined(OS_WIN)
-void TestRenderWidgetHostView::SetParentNativeViewAccessible(
-    gfx::NativeViewAccessible accessible_parent) {
+HWND TestRenderWidgetHostView::GetAccessibleParentHWND() const {
+  return NULL;
+}
+
+IAccessible* TestRenderWidgetHostView::GetParentIAccessible() const {
+  return NULL;
 }
 
 gfx::NativeViewId TestRenderWidgetHostView::GetParentForWindowlessPlugin()