Further minify non-visible JavaScript.

src/debug-delay.js

Index: src/debug-delay.js
diff --git a/src/debug-delay.js b/src/debug-delay.js
index 71ed37f06db0484ce6a29cf72e1b7516316346fe..a33a94a9ba2c27924478644721c0150683aede9b 100644
--- a/src/debug-delay.js
+++ b/src/debug-delay.js
@@ -25,6 +25,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+// jsminify this file, js2c: jsmin
+
 // Default number of frames to include in the response to backtrace request.
 const kDefaultBacktraceLength = 10;