0Previously, the {Basic,}TestingSetup for fuzzers were set up in many ways:
 1
 21. Calling InitializeFuzzingContext, which implicitly constructs a static
 3   const BasicTestingSetup
 42. Directly constructing a static const BasicTestingSetup in the initialize_*
 5   function
 63. Directly constructing a static TestingSetup and reproducing the
 7   initialization arguments (I'm assuming because
 8   InitializeFuzzingContext only initializes a BasicTestingSetup)
 9
10The new, relatively-simple MakeFuzzingContext function allows us to
11consolidate these methods of initialization by being flexible enough to
12be used in all situations. It:
13
141. Is templated so that we can choose to initialize any of
15   the *TestingSetup classes
162. Has sane defaults which are often used in fuzzers but are also
17   easily overridable
183. Returns a unique_ptr, explicitly transferring ownership to the caller
19   to deal with according to its situation
Question for fuzzing people: was it intentional that  Answeredsrc/test/fuzz/net.cpp would directly instantiate the BasicTestingSetup and thus omit the "-nodebuglogfile" flag?