Make glog exported depencency of debug module

Summary:
Changelog: [internal]

`glog` needs to be exported dependency because it is used in public headers.

Reviewed By: mdvacca

Differential Revision: D27617632

fbshipit-source-id: 91aa27b641286002a80a8cd5ef2e6fe6c266b452

Author: sammy-SC

ReactCommon/react/debug/BUCK

@@ -58,10 +58,12 @@ rn_xplat_cxx_library(
     tests = [],
     visibility = ["PUBLIC"],
     deps = [
-        "//third-party/glog:glog",
         "//xplat/fbsystrace:fbsystrace",
         "//xplat/folly:headers_only",
         "//xplat/folly:memory",
         "//xplat/folly:molly",
     ],
+    exported_deps = [
+        "//third-party/glog:glog",
+    ],
 )