There is different Wi-Fi security support between ZXing's Wi-Fi QR code
format and Wi-Fi DPP QR code format.
ZXing's Wi-Fi QR code format: supports WEP / WPA / none security
Wi-Fi DPP: supports WPA / SAE
So we will have different UI behavior for different security.
WEP & none security: only support QR code generator
WPA: supports both QR code generator & scanner
SAE: only supports QR code scanner
others: don't support. The share button is invisible
Bug: 123212410
Test: manual test
Change-Id: I87962d730282fc2c1b96223dca6feb79235fe5a1
1. As DPP configurator initiator.
2. As DPP enrollee initiator.
3. Pass whole DPP url to DPP API due to API cahnged.
Bug: 122331217
Test: manual test
Change-Id: I8005b78b82453badf253dbde8022ff20722b39fd
1.Add a button to launch QR code scanner when add a network.
2.Scan button added in AddNetworkFragment / WifiDialog / WifiSettings.
Bug: 120630683
Test: make RunSettingsRoboTests
Change-Id: I340bfa2247e092f586dd90dfea37c355e681ffee