Insert app foregound and background usage time information into the
preference item summary based on the different scenarios.
Bug: 177406865
Test: make SettingsRoboTests
Test: make SettingsGoogleRoboTests
Change-Id: I13ba357666adfb7b57f52ffae18d09aed8dd0773
Sends fake data into SettingsIntelligence if there is no data in the
battery consumption list, otherwise we don't have battery level data to
draw into the chart graph. We should draw the battery levels if it is
full-charged without any BatteryEntry data.
Bug: 184807417
Test: make SettingsRoboTests
Test: make SettingsGoogleRoboTests
Change-Id: I759e769256f4aa0ec152afff5c265ee3d04c03da