Battery Status API: blink promise implementation and layout tests.

LayoutTests/battery-status/api-defined-expected.txt

Index: LayoutTests/battery-status/api-defined-expected.txt
diff --git a/LayoutTests/battery-status/api-defined-expected.txt b/LayoutTests/battery-status/api-defined-expected.txt
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+Test basic API definitions.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS promise is defined.
+PASS promise.then is defined.
+batteryStatusSuccess invoked
+PASS battery is defined.
+PASS battery is non-null.
+PASS battery.charging is defined.
+PASS battery.chargingTime is defined.
+PASS battery.dischargingTime is defined.
+PASS battery.level is defined.
+PASS battery.charging is mockBatteryInfo.charging
+PASS battery.chargingTime is mockBatteryInfo.chargingTime
+PASS battery.dischargingTime is mockBatteryInfo.dischargingTime
+PASS battery.level is mockBatteryInfo.level
+PASS typeof battery.onchargingchange == 'object' is true
+PASS typeof battery.onchargingtimechange == 'object' is true
+PASS typeof battery.ondischargingtimechange == 'object' is true
+PASS typeof battery.onlevelchange == 'object' is true
+PASS battery.hasOwnProperty('onchargingchange') is true
+PASS battery.hasOwnProperty('onchargingtimechange') is true
+PASS battery.hasOwnProperty('ondischargingtimechange') is true
+PASS battery.hasOwnProperty('onlevelchange') is true
+PASS 'onchargingchange' in battery is true
+PASS 'onchargingtimechange' in battery is true
+PASS 'ondischargingtimechange' in battery is true
+PASS 'onlevelchange' in battery is true
+PASS successfullyParsed is true
+
+TEST COMPLETE
+