[Zucchini] Add DEX Reference read / write for basic types.

(Committing on behalf of etiennep@).

This CL adds DEX References read / write for 11 basic types. Details:
- Add InstructionParser to visit DEX instructions in the insns member
  of a CodeItem, taking care to skip non-instruction "payloads".
- Add InstructionReferenceReader to visit CodeItem References found in
  |[lo, hi)|, using provided callbacks to apply type filters and
  extract targets.
- Add ItemReferenceReader to visit fixed-sized items to extract
  Referenes from a "member variable of interest", using a callback
  to extract targets.
- DisassemblerDex: Add MakeRead*() and MakeWrite*() to return a visitor
  to read / write supported DEX References.
- Add DEX unit test to audit the error-prone look-up table from
  DisassemblerDex::MakeReferenceGroups().

Change-Id: Ice12a867aab4fdcb4a152bb1946ea7515ad426ef
Reviewed-on: https://chromium-review.googlesource.com/994066
Reviewed-by: Samuel Huang <huangs@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549178}
NOKEYCHECK=True
GitOrigin-RevId: 7b249ec48aa0f1058496a1b7f095b0f126011bf6

0 files changed, 0 insertions, 0 deletions