Remove isDebuggerActive native implementation.

This function is identical to VMDebug#isDebuggerConnected and always
has been in ART (on dalvik there was a distinction between the two).
Simply implement this function in java to reduce the number of places
the debugger needs to overwrite native functions.

Test: build

Bug: 148401311
Change-Id: I56448e5c437900cb072aa39ee784a25efad260b0
1 file changed