Previously everything lived in an inner class method of
SettingsRobolectricTestRunner. That method has now been turned into
a static method so that it can be called by other runners.
Bug: 62460102
Test: robotests
Change-Id: I6612b1f26404587301c534c8ba60e39d59d6c840
In SettingsDumpService, add the feature to dump the default
broswer. When there is no default broswer, dump nothing.
Bug: 27043208
Test: make -j40 RunSettingsRoboTests
Change-Id: I5ce8180d419f8a0e921da72da28eccb36a523668