Correct typo in ADBClientSocket traffic annotation.

Typo corrected in ADBClientSocket's network traffic annotation.

Bug: 656607
Change-Id: I627e41fc48b778e6b8b2ba423707984a02002f71
Reviewed-on: https://chromium-review.googlesource.com/824242Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524011}

chrome/browser/devtools/device/adb/adb_client_socket.cc

@@ -212,7 +212,7 @@ void AdbClientSocket::SendCommand(const std::string& command,
           destination: LOCAL
         }
         policy {
-          cookies_allowed: false
+          cookies_allowed: NO
           setting:
             "To use adb with a device connected over USB, you must enable USB "
             "debugging in the device system settings, under Developer options."