Reland of move header dependencies from sequence_checker.h to sequenced_worker_pool.h

net/android/http_auth_negotiate_android.h

Index: net/android/http_auth_negotiate_android.h
diff --git a/net/android/http_auth_negotiate_android.h b/net/android/http_auth_negotiate_android.h
index f63620d567b32a34c8c863a3be22834764d428c4..dd1cf317d541458ef2a799ca3b5806522d611219 100644
--- a/net/android/http_auth_negotiate_android.h
+++ b/net/android/http_auth_negotiate_android.h
@@ -17,6 +17,10 @@
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
 #include "net/http/http_auth.h"
+
+namespace base {
+class TaskRunner;
+}
 
 namespace net {