DevTools: Use Ctrl-G on Mac for GoTo line dialog
DevTools: Use Ctrl-G on Mac for GoTo line dialog

This patch changes shortcut to summon "Goto line dialog" on Mac OS X
from Cmd-L to Ctrl-G. The reason for this change is that Cmd-L is
bound to "Goto nav bar" in chrome, at it is very convenient to use.

BUG=

Review URL: https://chromiumcodereview.appspot.com/23159009

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@156507 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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