views/mus: Have explicit ownership of views::WindowManagerConnection.

chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc

Index: chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
diff --git a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
index 1d45fb1dd6800381cb86a90e6a5c89d5ddb2f18a..1dfd4381ae9789d54b4d7fffff06c6232bb410e5 100644
--- a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
+++ b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
@@ -50,9 +50,10 @@ void ChromeBrowserMainExtraPartsViews::PreProfileInit() {
   content::MojoShellConnection* mojo_shell_connection =
       content::MojoShellConnection::Get();
   if (mojo_shell_connection && mojo_shell_connection->UsingExternalShell()) {
-    views::WindowManagerConnection::Create(
+    window_manager_connection_ = views::WindowManagerConnection::Create(
         mojo_shell_connection->GetConnector(),
         mojo_shell_connection->GetIdentity());
   }
-#endif
+#endif  // defined(USE_AURA) && defined(MOJO_SHELL_CLIENT)
+  ChromeBrowserMainExtraParts::PreProfileInit();
 }