Bug 944225 - Part 1: Add set/getPreferredNetworkType() API (idl). r=hsinyi
Bug 944225 - Part 2: Add set/getPreferredNetworkType() API (dom). f=hsinyi r=smaug
Bug 944225 - Part 3: Add set/getPreferredNetworkType() API (ril). r=hsinyi
Bug 944225 - Part 4: Add set/getPreferredNetworkType() API (tests). r=hsinyi

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rename : dom/network/tests/marionette/test_mobile_preferred_network_type.js => dom/network/tests/marionette/test_mobile_preferred_network_type_by_setting.js