Move all WINUSB-dependent functionality into AdbWinUsbApi.dll in order to
enable ADB on condition that WINUSB has not been installed.
In this patch set new file (adb_winusb_api.h) has been added where I moved
typedef that broke the build. Aso, adb_api.cpp and AdbWinApi.cpp were changed
to include that new header file.
BUG 2033924
The primary usage for this code is to provide vendors / customers who for some
reasons are not satisfied with WinUsb, with a sample custom driver code that is
compliant with our AdbWinApi.dll. So vendors / customers can build their own
custom USB driver that can be recognized by AdbWinApi, and can be accessible from
adb.exe
usb_windows.c doesn't build with adb_legacy_api.h included into adb_api.h
Since adb_legacy_api.h is not used anywhere outside AdbWinApi.dll project, the simplest
fix would be to remove its inclusion from adb_api.h
To support both, WinUsb and Legacy driver APIs we need to abstract classes
that depend on driver API details and then implement two sets of the
actual classes: one for WinUsb, and another for the Legacy drivers, so
we can choose in runtime which objects should be instantiated, depending
on what type of driver we have underneath this API.
