Call Graph generator.

[Christopher Loyd Nugeng]

Does the Chromium repo have any tool for generating a function call
graph? A bug I'm dealing with may necessitate a datatype change, and I
am trying to track down what functionality depends on this particular
variable. I've found some functions that interract with it and add to
it, and hence have parameters of the same type coming from various
sources. These are called in various places in the code (I used The
Silver Searcher (ag) to do a regex check).  I would like to generate a
visualized call graph so I can trace logic flows that call these
functions back to the source, and that being the Chromium functionality
and use case involved. This will help me make an informed decisions as
to whether changing the datatype is wise, how to do it, and where I may
need to make additional changes to adapt to the new datatype while
causing minimal disruption elsewhere.  I can give more information if
you need it.

[K. Moon]

We typically use Code Search (source.chromium.org) to answer these kinds of questions.

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