Bug 1336309 - modify the access key for 'play tab' option.
Because the key "P" was already used by "pin tab", we need to change the access key.
MozReview-Commit-ID: Igzs6cv1bLj
--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -810,17 +810,17 @@ userContext.aboutPage.accesskey = O
userContextOpenLink.label = Open Link in New %S Tab
muteTab.label = Mute Tab
muteTab.accesskey = M
unmuteTab.label = Unmute Tab
unmuteTab.accesskey = M
playTab.label = Play Tab
-playTab.accesskey = P
+playTab.accesskey = l
# LOCALIZATION NOTE (weakCryptoOverriding.message): %S is brandShortName
weakCryptoOverriding.message = %S recommends that you don’t enter your password, credit card and other personal information on this website.
revokeOverride.label = Don’t Trust This Website
revokeOverride.accesskey = D
# LOCALIZATION NOTE (certErrorDetails*.label): These are text strings that
# appear in the about:certerror page, so that the user can copy and send them to