Discrepancies between the version of the key lookup table used by Chrome and the one against which the PNaCl plugin is compiled cause keys to go missing in Chromoting. This CL is a quick fix for one recent regression--the longer term fix is to move away from using PPAPI for keyboard events.

BUG=606457

Review URL: https://codereview.chromium.org/1920033003

Cr-Commit-Position: refs/heads/master@{#389587}