Fix closing namespace comments in //net.

net/android/gurl_utils.cc

Index: net/android/gurl_utils.cc
diff --git a/net/android/gurl_utils.cc b/net/android/gurl_utils.cc
index 826b1b8e6676700560fdb99531a079759b185339..28a580236d5f4a8f20cbfbdf77424342c76eb34c 100644
--- a/net/android/gurl_utils.cc
+++ b/net/android/gurl_utils.cc
@@ -33,4 +33,4 @@ bool RegisterGURLUtils(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
-}  // net namespace
+}  // namespace net