Refactoring the core security code.

As opposed to a flat directory, we now have the following structure:

- security
  -context
  - credentials
    - composite
    - fake
    - google_default
    - iam
    - jwt
    - oauth2
    - plugin
    - ssl
  - transport
  - util

We have not refactored the test code yet but this PR is already large
enough...

1 files changed, 1 insertions, 1 deletions

diff --git a/test/core/security/oauth2_utils.c b/test/core/security/oauth2_utils.c
index 20815d184c..80d21cc602 100644
--- a/test/core/security/oauth2_utils.c
+++ b/test/core/security/oauth2_utils.c
@@ -42,7 +42,7 @@
 #include <grpc/support/slice.h>
 #include <grpc/support/sync.h>
 
-#include "src/core/lib/security/credentials.h"
+#include "src/core/lib/security/credentials/credentials.h"
 
 typedef struct {
   gpr_mu *mu;