no throttling for Webkit browsers
no throttling for Webkit browsers


Former-commit-id: 664726993c542c7da4daca6e54a03c2fb598ded4 [formerly 61068fbd7b1b5536a542dfda6746e6366a0d4683]
Former-commit-id: 2d3255beae981fc646bf1a1337e5a4e975197b40
greenify/msa,greenify/msa,greenify/msa