Improve GCM enum switch type safety

google_apis/gcm/engine/connection_handler_impl.cc

Index: google_apis/gcm/engine/connection_handler_impl.cc
diff --git a/google_apis/gcm/engine/connection_handler_impl.cc b/google_apis/gcm/engine/connection_handler_impl.cc
index 38b2ee4fbe28545f814b5d65ca2a82b6b958359b..d2c071ade815c467e300614649b29fdbfeb885dd 100644
--- a/google_apis/gcm/engine/connection_handler_impl.cc
+++ b/google_apis/gcm/engine/connection_handler_impl.cc
@@ -229,8 +229,6 @@ void ConnectionHandlerImpl::WaitForData(ProcessingState state) {
         max_bytes_needed = bytes_left;
       }
       break;
-    default:
-      NOTREACHED();
   }
   DCHECK_GE(max_bytes_needed, min_bytes_needed);
 
@@ -285,8 +283,6 @@ void ConnectionHandlerImpl::WaitForData(ProcessingState state) {
     case MCS_PROTO_BYTES:
       OnGotMessageBytes();
       break;
-    default:
-      NOTREACHED();
   }
 }